Finding the Fourth Proportional to 142,598.08, 196,784.61 and 78,073.18

Step by Step Solution

1. Step 1: Write the proportion equation
   142,598.08 : 196,784.61 = 78,073.18 : x
2. Step 2: Convert to fraction form
   142,598.08/196,784.61 = 78,073.18/x
3. Step 3: Cross multiply
   142,598.08x = 196,784.61 × 78,073.18
4. Step 4: Simplify right side
   142,598.08x = 15,363,600,277.76
5. Step 5: Solve for x
   x = 15,363,600,277.76/142,598.08
6. Step 6: Final answer
   x = 107,740.58