Finding the Fourth Proportional to 113,273.50, 156,317.61 and 62,972.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,273.50 : 156,317.61 = 62,972.50 : x
2. Step 2: Convert to fraction form
   113,273.50/156,317.61 = 62,972.50/x
3. Step 3: Cross multiply
   113,273.50x = 156,317.61 × 62,972.50
4. Step 4: Simplify right side
   113,273.50x = 9,843,710,695.73
5. Step 5: Solve for x
   x = 9,843,710,695.73/113,273.50
6. Step 6: Final answer
   x = 86,902.15