Finding the Fourth Proportional to 140,520.48, 193,915.86 and 76,856.91

Step by Step Solution

1. Step 1: Write the proportion equation
   140,520.48 : 193,915.86 = 76,856.91 : x
2. Step 2: Convert to fraction form
   140,520.48/193,915.86 = 76,856.91/x
3. Step 3: Cross multiply
   140,520.48x = 193,915.86 × 76,856.91
4. Step 4: Simplify right side
   140,520.48x = 14,903,773,799.59
5. Step 5: Solve for x
   x = 14,903,773,799.59/140,520.48
6. Step 6: Final answer
   x = 106,061.22