Finding the Fourth Proportional to 112,516.38, 155,131.47 and 72,158.94

Step by Step Solution

1. Step 1: Write the proportion equation
   112,516.38 : 155,131.47 = 72,158.94 : x
2. Step 2: Convert to fraction form
   112,516.38/155,131.47 = 72,158.94/x
3. Step 3: Cross multiply
   112,516.38x = 155,131.47 × 72,158.94
4. Step 4: Simplify right side
   112,516.38x = 11,194,122,435.84
5. Step 5: Solve for x
   x = 11,194,122,435.84/112,516.38
6. Step 6: Final answer
   x = 99,488.82