Finding the Fourth Proportional to 81,391.23, 112,321.89 and 45,588.52

Step by Step Solution

1. Step 1: Write the proportion equation
   81,391.23 : 112,321.89 = 45,588.52 : x
2. Step 2: Convert to fraction form
   81,391.23/112,321.89 = 45,588.52/x
3. Step 3: Cross multiply
   81,391.23x = 112,321.89 × 45,588.52
4. Step 4: Simplify right side
   81,391.23x = 5,120,588,869.11
5. Step 5: Solve for x
   x = 5,120,588,869.11/81,391.23
6. Step 6: Final answer
   x = 62,913.28