Finding the Fourth Proportional to 42,448.91, 63,886.50 and 31,973.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,448.91 : 63,886.50 = 31,973.18 : x
2. Step 2: Convert to fraction form
   42,448.91/63,886.50 = 31,973.18/x
3. Step 3: Cross multiply
   42,448.91x = 63,886.50 × 31,973.18
4. Step 4: Simplify right side
   42,448.91x = 2,042,654,244.64
5. Step 5: Solve for x
   x = 2,042,654,244.64/42,448.91
6. Step 6: Final answer
   x = 48,120.30