Finding the Fourth Proportional to 142,278.78, 196,385.61 and 93,916.01

Step by Step Solution

1. Step 1: Write the proportion equation
   142,278.78 : 196,385.61 = 93,916.01 : x
2. Step 2: Convert to fraction form
   142,278.78/196,385.61 = 93,916.01/x
3. Step 3: Cross multiply
   142,278.78x = 196,385.61 × 93,916.01
4. Step 4: Simplify right side
   142,278.78x = 18,443,752,651.10
5. Step 5: Solve for x
   x = 18,443,752,651.10/142,278.78
6. Step 6: Final answer
   x = 129,631.09