Finding the Fourth Proportional to 86,105.95, 129,217.70 and 29,945.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,105.95 : 129,217.70 = 29,945.50 : x
2. Step 2: Convert to fraction form
   86,105.95/129,217.70 = 29,945.50/x
3. Step 3: Cross multiply
   86,105.95x = 129,217.70 × 29,945.50
4. Step 4: Simplify right side
   86,105.95x = 3,869,488,281.89
5. Step 5: Solve for x
   x = 3,869,488,281.89/86,105.95
6. Step 6: Final answer
   x = 44,938.69