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Finding the Fourth Proportional to 85,865.67, 128,762.06 and 46,412.19

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Solution

The fourth proportional to 85,865.67, 128,762.06 and 46,412.19 is: 69,598.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,865.67 : 128,762.06 = 46,412.19 : x
  2. Step 2: Convert to fraction form
    85,865.67/128,762.06 = 46,412.19/x
  3. Step 3: Cross multiply
    85,865.67x = 128,762.06 × 46,412.19
  4. Step 4: Simplify right side
    85,865.67x = 5,976,128,961.45
  5. Step 5: Solve for x
    x = 5,976,128,961.45/85,865.67
  6. Step 6: Final answer
    x = 69,598.58

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