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Finding the Fourth Proportional to 85,884,622.80, 128,742,953.40 and 76,814,696.40

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Solution

The fourth proportional to 85,884,622.80, 128,742,953.40 and 76,814,696.40 is: 115,146,932.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,884,622.80 : 128,742,953.40 = 76,814,696.40 : x
  2. Step 2: Convert to fraction form
    85,884,622.80/128,742,953.40 = 76,814,696.40/x
  3. Step 3: Cross multiply
    85,884,622.80x = 128,742,953.40 × 76,814,696.40
  4. Step 4: Simplify right side
    85,884,622.80x = 9,889,350,879,060,348
  5. Step 5: Solve for x
    x = 9,889,350,879,060,348/85,884,622.80
  6. Step 6: Final answer
    x = 115,146,932.67

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