Finding the Fourth Proportional to 92,061.45, 138,092.19 and 28,891.32

Step by Step Solution

1. Step 1: Write the proportion equation
   92,061.45 : 138,092.19 = 28,891.32 : x
2. Step 2: Convert to fraction form
   92,061.45/138,092.19 = 28,891.32/x
3. Step 3: Cross multiply
   92,061.45x = 138,092.19 × 28,891.32
4. Step 4: Simplify right side
   92,061.45x = 3,989,665,024.60
5. Step 5: Solve for x
   x = 3,989,665,024.60/92,061.45
6. Step 6: Final answer
   x = 43,336.98