Finding the Fourth Proportional to 90,143.08, 135,229.20 and 37,557.88

Step by Step Solution

1. Step 1: Write the proportion equation
   90,143.08 : 135,229.20 = 37,557.88 : x
2. Step 2: Convert to fraction form
   90,143.08/135,229.20 = 37,557.88/x
3. Step 3: Cross multiply
   90,143.08x = 135,229.20 × 37,557.88
4. Step 4: Simplify right side
   90,143.08x = 5,078,922,066.10
5. Step 5: Solve for x
   x = 5,078,922,066.10/90,143.08
6. Step 6: Final answer
   x = 56,342.89