Finding the Fourth Proportional to 72,164.02, 99,587.01 and 39,898.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72,164.02 : 99,587.01 = 39,898.17 : x
2. Step 2: Convert to fraction form
   72,164.02/99,587.01 = 39,898.17/x
3. Step 3: Cross multiply
   72,164.02x = 99,587.01 × 39,898.17
4. Step 4: Simplify right side
   72,164.02x = 3,973,339,454.77
5. Step 5: Solve for x
   x = 3,973,339,454.77/72,164.02
6. Step 6: Final answer
   x = 55,059.84