Finding the Fourth Proportional to 37,874.70, 52,316.55 and 30,731.31

Step by Step Solution

1. Step 1: Write the proportion equation
   37,874.70 : 52,316.55 = 30,731.31 : x
2. Step 2: Convert to fraction form
   37,874.70/52,316.55 = 30,731.31/x
3. Step 3: Cross multiply
   37,874.70x = 52,316.55 × 30,731.31
4. Step 4: Simplify right side
   37,874.70x = 1,607,756,116.18
5. Step 5: Solve for x
   x = 1,607,756,116.18/37,874.70
6. Step 6: Final answer
   x = 42,449.34