Finding the Fourth Proportional to 42,487.71, 63,700.48 and 21,417.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,487.71 : 63,700.48 = 21,417.34 : x
2. Step 2: Convert to fraction form
   42,487.71/63,700.48 = 21,417.34/x
3. Step 3: Cross multiply
   42,487.71x = 63,700.48 × 21,417.34
4. Step 4: Simplify right side
   42,487.71x = 1,364,294,525.65
5. Step 5: Solve for x
   x = 1,364,294,525.65/42,487.71
6. Step 6: Final answer
   x = 32,110.33