Finding the Fourth Proportional to 109,167.12, 150,650.33 and 61,420.55

Step by Step Solution

1. Step 1: Write the proportion equation
   109,167.12 : 150,650.33 = 61,420.55 : x
2. Step 2: Convert to fraction form
   109,167.12/150,650.33 = 61,420.55/x
3. Step 3: Cross multiply
   109,167.12x = 150,650.33 × 61,420.55
4. Step 4: Simplify right side
   109,167.12x = 9,253,025,065.93
5. Step 5: Solve for x
   x = 9,253,025,065.93/109,167.12
6. Step 6: Final answer
   x = 84,760.18