Finding the Fourth Proportional to 113,148.74, 156,173.33 and 65,429.75

Step by Step Solution

1. Step 1: Write the proportion equation
   113,148.74 : 156,173.33 = 65,429.75 : x
2. Step 2: Convert to fraction form
   113,148.74/156,173.33 = 65,429.75/x
3. Step 3: Cross multiply
   113,148.74x = 156,173.33 × 65,429.75
4. Step 4: Simplify right side
   113,148.74x = 10,218,381,938.57
5. Step 5: Solve for x
   x = 10,218,381,938.57/113,148.74
6. Step 6: Final answer
   x = 90,309.29