Finding the Fourth Proportional to 90,096.30, 135,029.43 and 42,711.30

Step by Step Solution

1. Step 1: Write the proportion equation
   90,096.30 : 135,029.43 = 42,711.30 : x
2. Step 2: Convert to fraction form
   90,096.30/135,029.43 = 42,711.30/x
3. Step 3: Cross multiply
   90,096.30x = 135,029.43 × 42,711.30
4. Step 4: Simplify right side
   90,096.30x = 5,767,282,493.56
5. Step 5: Solve for x
   x = 5,767,282,493.56/90,096.30
6. Step 6: Final answer
   x = 64,012.42