Finding the Fourth Proportional to 113,662.08, 156,840.98 and 72,807.57

Step by Step Solution

1. Step 1: Write the proportion equation
   113,662.08 : 156,840.98 = 72,807.57 : x
2. Step 2: Convert to fraction form
   113,662.08/156,840.98 = 72,807.57/x
3. Step 3: Cross multiply
   113,662.08x = 156,840.98 × 72,807.57
4. Step 4: Simplify right side
   113,662.08x = 11,419,210,266.18
5. Step 5: Solve for x
   x = 11,419,210,266.18/113,662.08
6. Step 6: Final answer
   x = 100,466.31