Finding the Fourth Proportional to 42,854.52, 64,307.70 and 16,561.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,854.52 : 64,307.70 = 16,561.56 : x
2. Step 2: Convert to fraction form
   42,854.52/64,307.70 = 16,561.56/x
3. Step 3: Cross multiply
   42,854.52x = 64,307.70 × 16,561.56
4. Step 4: Simplify right side
   42,854.52x = 1,065,035,832.01
5. Step 5: Solve for x
   x = 1,065,035,832.01/42,854.52
6. Step 6: Final answer
   x = 24,852.36