Finding the Fourth Proportional to 101,002.72, 139,393.61 and 75,464.77

Step by Step Solution

1. Step 1: Write the proportion equation
   101,002.72 : 139,393.61 = 75,464.77 : x
2. Step 2: Convert to fraction form
   101,002.72/139,393.61 = 75,464.77/x
3. Step 3: Cross multiply
   101,002.72x = 139,393.61 × 75,464.77
4. Step 4: Simplify right side
   101,002.72x = 10,519,306,718.12
5. Step 5: Solve for x
   x = 10,519,306,718.12/101,002.72
6. Step 6: Final answer
   x = 104,148.75