Finding the Fourth Proportional to 50,402.34, 69,555.15 and 31,275

Step by Step Solution

1. Step 1: Write the proportion equation
   50,402.34 : 69,555.15 = 31,275 : x
2. Step 2: Convert to fraction form
   50,402.34/69,555.15 = 31,275/x
3. Step 3: Cross multiply
   50,402.34x = 69,555.15 × 31,275
4. Step 4: Simplify right side
   50,402.34x = 2,175,337,316.25
5. Step 5: Solve for x
   x = 2,175,337,316.25/50,402.34
6. Step 6: Final answer
   x = 43,159.45