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Finding the Fourth Proportional to 99,246.80, 148,870.20 and 57,256.40

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Solution

The fourth proportional to 99,246.80, 148,870.20 and 57,256.40 is: 85,884.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,246.80 : 148,870.20 = 57,256.40 : x
  2. Step 2: Convert to fraction form
    99,246.80/148,870.20 = 57,256.40/x
  3. Step 3: Cross multiply
    99,246.80x = 148,870.20 × 57,256.40
  4. Step 4: Simplify right side
    99,246.80x = 8,523,771,719.28
  5. Step 5: Solve for x
    x = 8,523,771,719.28/99,246.80
  6. Step 6: Final answer
    x = 85,884.60

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