Finding the Fourth Proportional to 142,429.47, 196,422.62 and 122,279.91

Step by Step Solution

1. Step 1: Write the proportion equation
   142,429.47 : 196,422.62 = 122,279.91 : x
2. Step 2: Convert to fraction form
   142,429.47/196,422.62 = 122,279.91/x
3. Step 3: Cross multiply
   142,429.47x = 196,422.62 × 122,279.91
4. Step 4: Simplify right side
   142,429.47x = 24,018,539,684.16
5. Step 5: Solve for x
   x = 24,018,539,684.16/142,429.47
6. Step 6: Final answer
   x = 168,634.62