Finding the Fourth Proportional to 90,766.99, 136,168.96 and 31,607.29

Step by Step Solution

1. Step 1: Write the proportion equation
   90,766.99 : 136,168.96 = 31,607.29 : x
2. Step 2: Convert to fraction form
   90,766.99/136,168.96 = 31,607.29/x
3. Step 3: Cross multiply
   90,766.99x = 136,168.96 × 31,607.29
4. Step 4: Simplify right side
   90,766.99x = 4,303,931,807.72
5. Step 5: Solve for x
   x = 4,303,931,807.72/90,766.99
6. Step 6: Final answer
   x = 47,417.37