Finding the Fourth Proportional to 156,972.24, 235,142.73 and 72,613.98

Step by Step Solution

1. Step 1: Write the proportion equation
   156,972.24 : 235,142.73 = 72,613.98 : x
2. Step 2: Convert to fraction form
   156,972.24/235,142.73 = 72,613.98/x
3. Step 3: Cross multiply
   156,972.24x = 235,142.73 × 72,613.98
4. Step 4: Simplify right side
   156,972.24x = 17,074,649,493.37
5. Step 5: Solve for x
   x = 17,074,649,493.37/156,972.24
6. Step 6: Final answer
   x = 108,774.96