Finding the Fourth Proportional to 142,730.29, 196,965.08 and 79,068.61

Step by Step Solution

1. Step 1: Write the proportion equation
   142,730.29 : 196,965.08 = 79,068.61 : x
2. Step 2: Convert to fraction form
   142,730.29/196,965.08 = 79,068.61/x
3. Step 3: Cross multiply
   142,730.29x = 196,965.08 × 79,068.61
4. Step 4: Simplify right side
   142,730.29x = 15,573,754,109.31
5. Step 5: Solve for x
   x = 15,573,754,109.31/142,730.29
6. Step 6: Final answer
   x = 109,113.17