Finding the Fourth Proportional to 113,517.06, 156,489.88 and 79,419.91

Step by Step Solution

1. Step 1: Write the proportion equation
   113,517.06 : 156,489.88 = 79,419.91 : x
2. Step 2: Convert to fraction form
   113,517.06/156,489.88 = 79,419.91/x
3. Step 3: Cross multiply
   113,517.06x = 156,489.88 × 79,419.91
4. Step 4: Simplify right side
   113,517.06x = 12,428,412,185.51
5. Step 5: Solve for x
   x = 12,428,412,185.51/113,517.06
6. Step 6: Final answer
   x = 109,484.97