Finding the Fourth Proportional to 177,870.83, 266,806.34 and 72,689.69

Step by Step Solution

1. Step 1: Write the proportion equation
   177,870.83 : 266,806.34 = 72,689.69 : x
2. Step 2: Convert to fraction form
   177,870.83/266,806.34 = 72,689.69/x
3. Step 3: Cross multiply
   177,870.83x = 266,806.34 × 72,689.69
4. Step 4: Simplify right side
   177,870.83x = 19,394,068,447.15
5. Step 5: Solve for x
   x = 19,394,068,447.15/177,870.83
6. Step 6: Final answer
   x = 109,034.57