Finding the Fourth Proportional to 42,784.64, 64,160.98 and 14,696.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,784.64 : 64,160.98 = 14,696.72 : x
2. Step 2: Convert to fraction form
   42,784.64/64,160.98 = 14,696.72/x
3. Step 3: Cross multiply
   42,784.64x = 64,160.98 × 14,696.72
4. Step 4: Simplify right side
   42,784.64x = 942,955,957.99
5. Step 5: Solve for x
   x = 942,955,957.99/42,784.64
6. Step 6: Final answer
   x = 22,039.59