Finding the Fourth Proportional to 123,082.96, 169,911.18 and 72,088.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123,082.96 : 169,911.18 = 72,088.60 : x
2. Step 2: Convert to fraction form
   123,082.96/169,911.18 = 72,088.60/x
3. Step 3: Cross multiply
   123,082.96x = 169,911.18 × 72,088.60
4. Step 4: Simplify right side
   123,082.96x = 12,248,659,090.55
5. Step 5: Solve for x
   x = 12,248,659,090.55/123,082.96
6. Step 6: Final answer
   x = 99,515.47