Finding the Fourth Proportional to 42,784.29, 64,162.78 and 14,697.57

Step by Step Solution

1. Step 1: Write the proportion equation
   42,784.29 : 64,162.78 = 14,697.57 : x
2. Step 2: Convert to fraction form
   42,784.29/64,162.78 = 14,697.57/x
3. Step 3: Cross multiply
   42,784.29x = 64,162.78 × 14,697.57
4. Step 4: Simplify right side
   42,784.29x = 943,036,820.95
5. Step 5: Solve for x
   x = 943,036,820.95/42,784.29
6. Step 6: Final answer
   x = 22,041.66