Finding the Fourth Proportional to 81,503.31, 112,474.49 and 45,693.33

Step by Step Solution

1. Step 1: Write the proportion equation
   81,503.31 : 112,474.49 = 45,693.33 : x
2. Step 2: Convert to fraction form
   81,503.31/112,474.49 = 45,693.33/x
3. Step 3: Cross multiply
   81,503.31x = 112,474.49 × 45,693.33
4. Step 4: Simplify right side
   81,503.31x = 5,139,333,988.15
5. Step 5: Solve for x
   x = 5,139,333,988.15/81,503.31
6. Step 6: Final answer
   x = 63,056.75