Finding the Fourth Proportional to 102,123.34, 140,872.69 and 61,276.91

Step by Step Solution

1. Step 1: Write the proportion equation
   102,123.34 : 140,872.69 = 61,276.91 : x
2. Step 2: Convert to fraction form
   102,123.34/140,872.69 = 61,276.91/x
3. Step 3: Cross multiply
   102,123.34x = 140,872.69 × 61,276.91
4. Step 4: Simplify right side
   102,123.34x = 8,632,242,641.21
5. Step 5: Solve for x
   x = 8,632,242,641.21/102,123.34
6. Step 6: Final answer
   x = 84,527.62