Finding the Fourth Proportional to 142,118.16, 196,117.95 and 78,454.59

Step by Step Solution

1. Step 1: Write the proportion equation
   142,118.16 : 196,117.95 = 78,454.59 : x
2. Step 2: Convert to fraction form
   142,118.16/196,117.95 = 78,454.59/x
3. Step 3: Cross multiply
   142,118.16x = 196,117.95 × 78,454.59
4. Step 4: Simplify right side
   142,118.16x = 15,386,353,358.89
5. Step 5: Solve for x
   x = 15,386,353,358.89/142,118.16
6. Step 6: Final answer
   x = 108,264.51