Finding the Fourth Proportional to 136,109.71, 187,803.78 and 79,510.15

Step by Step Solution

1. Step 1: Write the proportion equation
   136,109.71 : 187,803.78 = 79,510.15 : x
2. Step 2: Convert to fraction form
   136,109.71/187,803.78 = 79,510.15/x
3. Step 3: Cross multiply
   136,109.71x = 187,803.78 × 79,510.15
4. Step 4: Simplify right side
   136,109.71x = 14,932,306,718.37
5. Step 5: Solve for x
   x = 14,932,306,718.37/136,109.71
6. Step 6: Final answer
   x = 109,707.87