Finding the Fourth Proportional to 111,908.86, 154,434.81 and 61,607.86

Step by Step Solution

1. Step 1: Write the proportion equation
   111,908.86 : 154,434.81 = 61,607.86 : x
2. Step 2: Convert to fraction form
   111,908.86/154,434.81 = 61,607.86/x
3. Step 3: Cross multiply
   111,908.86x = 154,434.81 × 61,607.86
4. Step 4: Simplify right side
   111,908.86x = 9,514,398,153.61
5. Step 5: Solve for x
   x = 9,514,398,153.61/111,908.86
6. Step 6: Final answer
   x = 85,019.17