Finding the Fourth Proportional to 42,347.16, 63,582.30 and 31,149.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,347.16 : 63,582.30 = 31,149.72 : x
2. Step 2: Convert to fraction form
   42,347.16/63,582.30 = 31,149.72/x
3. Step 3: Cross multiply
   42,347.16x = 63,582.30 × 31,149.72
4. Step 4: Simplify right side
   42,347.16x = 1,980,570,841.96
5. Step 5: Solve for x
   x = 1,980,570,841.96/42,347.16
6. Step 6: Final answer
   x = 46,769.86