Finding the Fourth Proportional to 172,741.42, 259,146.96 and 72,901.72

Step by Step Solution

1. Step 1: Write the proportion equation
   172,741.42 : 259,146.96 = 72,901.72 : x
2. Step 2: Convert to fraction form
   172,741.42/259,146.96 = 72,901.72/x
3. Step 3: Cross multiply
   172,741.42x = 259,146.96 × 72,901.72
4. Step 4: Simplify right side
   172,741.42x = 18,892,259,116.77
5. Step 5: Solve for x
   x = 18,892,259,116.77/172,741.42
6. Step 6: Final answer
   x = 109,367.28