Finding the Fourth Proportional to 90,411.01, 135,597.96 and 34,231.78

Step by Step Solution

1. Step 1: Write the proportion equation
   90,411.01 : 135,597.96 = 34,231.78 : x
2. Step 2: Convert to fraction form
   90,411.01/135,597.96 = 34,231.78/x
3. Step 3: Cross multiply
   90,411.01x = 135,597.96 × 34,231.78
4. Step 4: Simplify right side
   90,411.01x = 4,641,759,535.17
5. Step 5: Solve for x
   x = 4,641,759,535.17/90,411.01
6. Step 6: Final answer
   x = 51,340.64