Finding the Fourth Proportional to 112,227.12, 154,888.20 and 78,213.60

Step by Step Solution

1. Step 1: Write the proportion equation
   112,227.12 : 154,888.20 = 78,213.60 : x
2. Step 2: Convert to fraction form
   112,227.12/154,888.20 = 78,213.60/x
3. Step 3: Cross multiply
   112,227.12x = 154,888.20 × 78,213.60
4. Step 4: Simplify right side
   112,227.12x = 12,114,363,719.52
5. Step 5: Solve for x
   x = 12,114,363,719.52/112,227.12
6. Step 6: Final answer
   x = 107,945.06