Finding the Fourth Proportional to 83,385.16, 115,070.72 and 45,143.73

Step by Step Solution

1. Step 1: Write the proportion equation
   83,385.16 : 115,070.72 = 45,143.73 : x
2. Step 2: Convert to fraction form
   83,385.16/115,070.72 = 45,143.73/x
3. Step 3: Cross multiply
   83,385.16x = 115,070.72 × 45,143.73
4. Step 4: Simplify right side
   83,385.16x = 5,194,721,288.87
5. Step 5: Solve for x
   x = 5,194,721,288.87/83,385.16
6. Step 6: Final answer
   x = 62,297.91