Finding the Fourth Proportional to 102,150.44, 140,970.98 and 61,871.72

Step by Step Solution

1. Step 1: Write the proportion equation
   102,150.44 : 140,970.98 = 61,871.72 : x
2. Step 2: Convert to fraction form
   102,150.44/140,970.98 = 61,871.72/x
3. Step 3: Cross multiply
   102,150.44x = 140,970.98 × 61,871.72
4. Step 4: Simplify right side
   102,150.44x = 8,722,117,002.69
5. Step 5: Solve for x
   x = 8,722,117,002.69/102,150.44
6. Step 6: Final answer
   x = 85,385.02