Finding the Fourth Proportional to 112,401.96, 155,136.48 and 72,166.56

Step by Step Solution

1. Step 1: Write the proportion equation
   112,401.96 : 155,136.48 = 72,166.56 : x
2. Step 2: Convert to fraction form
   112,401.96/155,136.48 = 72,166.56/x
3. Step 3: Cross multiply
   112,401.96x = 155,136.48 × 72,166.56
4. Step 4: Simplify right side
   112,401.96x = 11,195,666,092.11
5. Step 5: Solve for x
   x = 11,195,666,092.11/112,401.96
6. Step 6: Final answer
   x = 99,603.83