Finding the Fourth Proportional to 142,931.86, 197,246.55 and 79,275.58

Step by Step Solution

1. Step 1: Write the proportion equation
   142,931.86 : 197,246.55 = 79,275.58 : x
2. Step 2: Convert to fraction form
   142,931.86/197,246.55 = 79,275.58/x
3. Step 3: Cross multiply
   142,931.86x = 197,246.55 × 79,275.58
4. Step 4: Simplify right side
   142,931.86x = 15,636,834,654.25
5. Step 5: Solve for x
   x = 15,636,834,654.25/142,931.86
6. Step 6: Final answer
   x = 109,400.62