Finding the Fourth Proportional to 139,988.61, 193,177.31 and 79,551.27

Step by Step Solution

1. Step 1: Write the proportion equation
   139,988.61 : 193,177.31 = 79,551.27 : x
2. Step 2: Convert to fraction form
   139,988.61/193,177.31 = 79,551.27/x
3. Step 3: Cross multiply
   139,988.61x = 193,177.31 × 79,551.27
4. Step 4: Simplify right side
   139,988.61x = 15,367,499,947.93
5. Step 5: Solve for x
   x = 15,367,499,947.93/139,988.61
6. Step 6: Final answer
   x = 109,776.79