Finding the Fourth Proportional to 90,327.49, 134,941.81 and 58,478.08

Step by Step Solution

1. Step 1: Write the proportion equation
   90,327.49 : 134,941.81 = 58,478.08 : x
2. Step 2: Convert to fraction form
   90,327.49/134,941.81 = 58,478.08/x
3. Step 3: Cross multiply
   90,327.49x = 134,941.81 × 58,478.08
4. Step 4: Simplify right side
   90,327.49x = 7,891,137,960.52
5. Step 5: Solve for x
   x = 7,891,137,960.52/90,327.49
6. Step 6: Final answer
   x = 87,361.42