Finding the Fourth Proportional to 79,642.94, 109,901.60 and 47,375.78

Step by Step Solution

1. Step 1: Write the proportion equation
   79,642.94 : 109,901.60 = 47,375.78 : x
2. Step 2: Convert to fraction form
   79,642.94/109,901.60 = 47,375.78/x
3. Step 3: Cross multiply
   79,642.94x = 109,901.60 × 47,375.78
4. Step 4: Simplify right side
   79,642.94x = 5,206,674,061.12
5. Step 5: Solve for x
   x = 5,206,674,061.12/79,642.94
6. Step 6: Final answer
   x = 65,375.21