Finding the Fourth Proportional to 113,143.50, 156,142.89 and 62,842.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,143.50 : 156,142.89 = 62,842.50 : x
2. Step 2: Convert to fraction form
   113,143.50/156,142.89 = 62,842.50/x
3. Step 3: Cross multiply
   113,143.50x = 156,142.89 × 62,842.50
4. Step 4: Simplify right side
   113,143.50x = 9,812,409,564.83
5. Step 5: Solve for x
   x = 9,812,409,564.83/113,143.50
6. Step 6: Final answer
   x = 86,725.35