Finding the Fourth Proportional to 42,770.67, 64,108.20 and 17,793.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,770.67 : 64,108.20 = 17,793.72 : x
2. Step 2: Convert to fraction form
   42,770.67/64,108.20 = 17,793.72/x
3. Step 3: Cross multiply
   42,770.67x = 64,108.20 × 17,793.72
4. Step 4: Simplify right side
   42,770.67x = 1,140,723,360.50
5. Step 5: Solve for x
   x = 1,140,723,360.50/42,770.67
6. Step 6: Final answer
   x = 26,670.69