Finding the Fourth Proportional to 108,436.78, 162,904.38 and 76,925.08

Step by Step Solution

1. Step 1: Write the proportion equation
   108,436.78 : 162,904.38 = 76,925.08 : x
2. Step 2: Convert to fraction form
   108,436.78/162,904.38 = 76,925.08/x
3. Step 3: Cross multiply
   108,436.78x = 162,904.38 × 76,925.08
4. Step 4: Simplify right side
   108,436.78x = 12,531,432,463.85
5. Step 5: Solve for x
   x = 12,531,432,463.85/108,436.78
6. Step 6: Final answer
   x = 115,564.41