Finding the Fourth Proportional to 90,411.27, 124,751.58 and 54,577.28

Step by Step Solution

1. Step 1: Write the proportion equation
   90,411.27 : 124,751.58 = 54,577.28 : x
2. Step 2: Convert to fraction form
   90,411.27/124,751.58 = 54,577.28/x
3. Step 3: Cross multiply
   90,411.27x = 124,751.58 × 54,577.28
4. Step 4: Simplify right side
   90,411.27x = 6,808,601,288.34
5. Step 5: Solve for x
   x = 6,808,601,288.34/90,411.27
6. Step 6: Final answer
   x = 75,307.00