Finding the Fourth Proportional to 72,419,478.48, 99,940,774.37 and 39,381,659.87

Step by Step Solution

1. Step 1: Write the proportion equation
   72,419,478.48 : 99,940,774.37 = 39,381,659.87 : x
2. Step 2: Convert to fraction form
   72,419,478.48/99,940,774.37 = 39,381,659.87/x
3. Step 3: Cross multiply
   72,419,478.48x = 99,940,774.37 × 39,381,659.87
4. Step 4: Simplify right side
   72,419,478.48x = 3,935,833,582,687,141.50
5. Step 5: Solve for x
   x = 3,935,833,582,687,141.50/72,419,478.48
6. Step 6: Final answer
   x = 54,347,720.60