Finding the Fourth Proportional to 62,725.28, 86,563.20 and 34,430.72

Step by Step Solution

1. Step 1: Write the proportion equation
   62,725.28 : 86,563.20 = 34,430.72 : x
2. Step 2: Convert to fraction form
   62,725.28/86,563.20 = 34,430.72/x
3. Step 3: Cross multiply
   62,725.28x = 86,563.20 × 34,430.72
4. Step 4: Simplify right side
   62,725.28x = 2,980,433,301.50
5. Step 5: Solve for x
   x = 2,980,433,301.50/62,725.28
6. Step 6: Final answer
   x = 47,515.66