Finding the Fourth Proportional to 129,696.78, 194,498.30 and 54,822.72

Step by Step Solution

1. Step 1: Write the proportion equation
   129,696.78 : 194,498.30 = 54,822.72 : x
2. Step 2: Convert to fraction form
   129,696.78/194,498.30 = 54,822.72/x
3. Step 3: Cross multiply
   129,696.78x = 194,498.30 × 54,822.72
4. Step 4: Simplify right side
   129,696.78x = 10,662,925,841.38
5. Step 5: Solve for x
   x = 10,662,925,841.38/129,696.78
6. Step 6: Final answer
   x = 82,214.27