Finding the Fourth Proportional to 72,151.29, 108,051.98 and 49,902.21

Step by Step Solution

1. Step 1: Write the proportion equation
   72,151.29 : 108,051.98 = 49,902.21 : x
2. Step 2: Convert to fraction form
   72,151.29/108,051.98 = 49,902.21/x
3. Step 3: Cross multiply
   72,151.29x = 108,051.98 × 49,902.21
4. Step 4: Simplify right side
   72,151.29x = 5,392,032,347.36
5. Step 5: Solve for x
   x = 5,392,032,347.36/72,151.29
6. Step 6: Final answer
   x = 74,732.31