Finding the Fourth Proportional to 42,733.50, 64,123.20 and 17,790.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,733.50 : 64,123.20 = 17,790.76 : x
2. Step 2: Convert to fraction form
   42,733.50/64,123.20 = 17,790.76/x
3. Step 3: Cross multiply
   42,733.50x = 64,123.20 × 17,790.76
4. Step 4: Simplify right side
   42,733.50x = 1,140,800,555.22
5. Step 5: Solve for x
   x = 1,140,800,555.22/42,733.50
6. Step 6: Final answer
   x = 26,695.70