Finding the Fourth Proportional to 76,012.72, 114,031.37 and 31,641.21

Step by Step Solution

1. Step 1: Write the proportion equation
   76,012.72 : 114,031.37 = 31,641.21 : x
2. Step 2: Convert to fraction form
   76,012.72/114,031.37 = 31,641.21/x
3. Step 3: Cross multiply
   76,012.72x = 114,031.37 × 31,641.21
4. Step 4: Simplify right side
   76,012.72x = 3,608,090,524.76
5. Step 5: Solve for x
   x = 3,608,090,524.76/76,012.72
6. Step 6: Final answer
   x = 47,466.93