Finding the Fourth Proportional to 42,970.10, 64,439.71 and 14,882.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,970.10 : 64,439.71 = 14,882.60 : x
2. Step 2: Convert to fraction form
   42,970.10/64,439.71 = 14,882.60/x
3. Step 3: Cross multiply
   42,970.10x = 64,439.71 × 14,882.60
4. Step 4: Simplify right side
   42,970.10x = 959,030,031.43
5. Step 5: Solve for x
   x = 959,030,031.43/42,970.10
6. Step 6: Final answer
   x = 22,318.54