Finding the Fourth Proportional to 71,499.60, 107,258.51 and 27,139.04

Step by Step Solution

1. Step 1: Write the proportion equation
   71,499.60 : 107,258.51 = 27,139.04 : x
2. Step 2: Convert to fraction form
   71,499.60/107,258.51 = 27,139.04/x
3. Step 3: Cross multiply
   71,499.60x = 107,258.51 × 27,139.04
4. Step 4: Simplify right side
   71,499.60x = 2,910,892,927.00
5. Step 5: Solve for x
   x = 2,910,892,927.00/71,499.60
6. Step 6: Final answer
   x = 40,712.02