Finding the Fourth Proportional to 90,340.71, 135,557.31 and 43,009.35

Step by Step Solution

1. Step 1: Write the proportion equation
   90,340.71 : 135,557.31 = 43,009.35 : x
2. Step 2: Convert to fraction form
   90,340.71/135,557.31 = 43,009.35/x
3. Step 3: Cross multiply
   90,340.71x = 135,557.31 × 43,009.35
4. Step 4: Simplify right side
   90,340.71x = 5,830,231,790.85
5. Step 5: Solve for x
   x = 5,830,231,790.85/90,340.71
6. Step 6: Final answer
   x = 64,536.04