Finding the Fourth Proportional to 42,784.28, 64,160.04 and 14,699.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,784.28 : 64,160.04 = 14,699.12 : x
2. Step 2: Convert to fraction form
   42,784.28/64,160.04 = 14,699.12/x
3. Step 3: Cross multiply
   42,784.28x = 64,160.04 × 14,699.12
4. Step 4: Simplify right side
   42,784.28x = 943,096,127.16
5. Step 5: Solve for x
   x = 943,096,127.16/42,784.28
6. Step 6: Final answer
   x = 22,043.05