Finding the Fourth Proportional to 81,538.86, 112,419.46 and 52,807.76

Step by Step Solution

1. Step 1: Write the proportion equation
   81,538.86 : 112,419.46 = 52,807.76 : x
2. Step 2: Convert to fraction form
   81,538.86/112,419.46 = 52,807.76/x
3. Step 3: Cross multiply
   81,538.86x = 112,419.46 × 52,807.76
4. Step 4: Simplify right side
   81,538.86x = 5,936,619,863.01
5. Step 5: Solve for x
   x = 5,936,619,863.01/81,538.86
6. Step 6: Final answer
   x = 72,807.25