Finding the Fourth Proportional to 142,598.10, 196,786.35 and 78,934.53

Step by Step Solution

1. Step 1: Write the proportion equation
   142,598.10 : 196,786.35 = 78,934.53 : x
2. Step 2: Convert to fraction form
   142,598.10/196,786.35 = 78,934.53/x
3. Step 3: Cross multiply
   142,598.10x = 196,786.35 × 78,934.53
4. Step 4: Simplify right side
   142,598.10x = 15,533,238,047.67
5. Step 5: Solve for x
   x = 15,533,238,047.67/142,598.10
6. Step 6: Final answer
   x = 108,930.19