Finding the Fourth Proportional to 81,111.18, 111,892.64 and 52,455.28

Step by Step Solution

1. Step 1: Write the proportion equation
   81,111.18 : 111,892.64 = 52,455.28 : x
2. Step 2: Convert to fraction form
   81,111.18/111,892.64 = 52,455.28/x
3. Step 3: Cross multiply
   81,111.18x = 111,892.64 × 52,455.28
4. Step 4: Simplify right side
   81,111.18x = 5,869,359,761.14
5. Step 5: Solve for x
   x = 5,869,359,761.14/81,111.18
6. Step 6: Final answer
   x = 72,361.91