Finding the Fourth Proportional to 79,148.91, 109,231.25 and 45,158.15

Step by Step Solution

1. Step 1: Write the proportion equation
   79,148.91 : 109,231.25 = 45,158.15 : x
2. Step 2: Convert to fraction form
   79,148.91/109,231.25 = 45,158.15/x
3. Step 3: Cross multiply
   79,148.91x = 109,231.25 × 45,158.15
4. Step 4: Simplify right side
   79,148.91x = 4,932,681,172.19
5. Step 5: Solve for x
   x = 4,932,681,172.19/79,148.91
6. Step 6: Final answer
   x = 62,321.53