Finding the Fourth Proportional to 112,478.17, 155,200.71 and 67,174.33

Step by Step Solution

1. Step 1: Write the proportion equation
   112,478.17 : 155,200.71 = 67,174.33 : x
2. Step 2: Convert to fraction form
   112,478.17/155,200.71 = 67,174.33/x
3. Step 3: Cross multiply
   112,478.17x = 155,200.71 × 67,174.33
4. Step 4: Simplify right side
   112,478.17x = 10,425,503,709.77
5. Step 5: Solve for x
   x = 10,425,503,709.77/112,478.17
6. Step 6: Final answer
   x = 92,689.13