Finding the Fourth Proportional to 139,367.01, 192,406.26 and 91,758.75

Step by Step Solution

1. Step 1: Write the proportion equation
   139,367.01 : 192,406.26 = 91,758.75 : x
2. Step 2: Convert to fraction form
   139,367.01/192,406.26 = 91,758.75/x
3. Step 3: Cross multiply
   139,367.01x = 192,406.26 × 91,758.75
4. Step 4: Simplify right side
   139,367.01x = 17,654,957,909.78
5. Step 5: Solve for x
   x = 17,654,957,909.78/139,367.01
6. Step 6: Final answer
   x = 126,679.61