Finding the Fourth Proportional to 113,817.72, 157,077.15 and 62,840.28

Step by Step Solution

1. Step 1: Write the proportion equation
   113,817.72 : 157,077.15 = 62,840.28 : x
2. Step 2: Convert to fraction form
   113,817.72/157,077.15 = 62,840.28/x
3. Step 3: Cross multiply
   113,817.72x = 157,077.15 × 62,840.28
4. Step 4: Simplify right side
   113,817.72x = 9,870,772,087.60
5. Step 5: Solve for x
   x = 9,870,772,087.60/113,817.72
6. Step 6: Final answer
   x = 86,724.39