Finding the Fourth Proportional to 81,420.31, 112,362.56 and 45,602.11

Step by Step Solution

1. Step 1: Write the proportion equation
   81,420.31 : 112,362.56 = 45,602.11 : x
2. Step 2: Convert to fraction form
   81,420.31/112,362.56 = 45,602.11/x
3. Step 3: Cross multiply
   81,420.31x = 112,362.56 × 45,602.11
4. Step 4: Simplify right side
   81,420.31x = 5,123,969,821.00
5. Step 5: Solve for x
   x = 5,123,969,821.00/81,420.31
6. Step 6: Final answer
   x = 62,932.33