Finding the Fourth Proportional to 90,098.30, 135,032.42 and 42,713.30

Step by Step Solution

1. Step 1: Write the proportion equation
   90,098.30 : 135,032.42 = 42,713.30 : x
2. Step 2: Convert to fraction form
   90,098.30/135,032.42 = 42,713.30/x
3. Step 3: Cross multiply
   90,098.30x = 135,032.42 × 42,713.30
4. Step 4: Simplify right side
   90,098.30x = 5,767,680,265.19
5. Step 5: Solve for x
   x = 5,767,680,265.19/90,098.30
6. Step 6: Final answer
   x = 64,015.42