Finding the Fourth Proportional to 142,404.03, 196,509.71 and 78,737.63

Step by Step Solution

1. Step 1: Write the proportion equation
   142,404.03 : 196,509.71 = 78,737.63 : x
2. Step 2: Convert to fraction form
   142,404.03/196,509.71 = 78,737.63/x
3. Step 3: Cross multiply
   142,404.03x = 196,509.71 × 78,737.63
4. Step 4: Simplify right side
   142,404.03x = 15,472,708,051.68
5. Step 5: Solve for x
   x = 15,472,708,051.68/142,404.03
6. Step 6: Final answer
   x = 108,653.58