Finding the Fourth Proportional to 158,447, 218,656.86 and 91,379

Step by Step Solution

1. Step 1: Write the proportion equation
   158,447 : 218,656.86 = 91,379 : x
2. Step 2: Convert to fraction form
   158,447/218,656.86 = 91,379/x
3. Step 3: Cross multiply
   158,447x = 218,656.86 × 91,379
4. Step 4: Simplify right side
   158,447x = 19,980,645,209.94
5. Step 5: Solve for x
   x = 19,980,645,209.94/158,447
6. Step 6: Final answer
   x = 126,103.02