Finding the Fourth Proportional to 112,264.61, 154,871.39 and 75,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,264.61 : 154,871.39 = 75,978.72 : x
2. Step 2: Convert to fraction form
   112,264.61/154,871.39 = 75,978.72/x
3. Step 3: Cross multiply
   112,264.61x = 154,871.39 × 75,978.72
4. Step 4: Simplify right side
   112,264.61x = 11,766,929,596.93
5. Step 5: Solve for x
   x = 11,766,929,596.93/112,264.61
6. Step 6: Final answer
   x = 104,814.24