Finding the Fourth Proportional to 77,150.61, 115,769.61 and 30,436.29

Step by Step Solution

1. Step 1: Write the proportion equation
   77,150.61 : 115,769.61 = 30,436.29 : x
2. Step 2: Convert to fraction form
   77,150.61/115,769.61 = 30,436.29/x
3. Step 3: Cross multiply
   77,150.61x = 115,769.61 × 30,436.29
4. Step 4: Simplify right side
   77,150.61x = 3,523,597,423.15
5. Step 5: Solve for x
   x = 3,523,597,423.15/77,150.61
6. Step 6: Final answer
   x = 45,671.67