Finding the Fourth Proportional to 111,959.61, 154,503.59 and 61,658.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111,959.61 : 154,503.59 = 61,658.25 : x
2. Step 2: Convert to fraction form
   111,959.61/154,503.59 = 61,658.25/x
3. Step 3: Cross multiply
   111,959.61x = 154,503.59 × 61,658.25
4. Step 4: Simplify right side
   111,959.61x = 9,526,420,669.83
5. Step 5: Solve for x
   x = 9,526,420,669.83/111,959.61
6. Step 6: Final answer
   x = 85,088.01