Finding the Fourth Proportional to 50,343.72, 69,457.05 and 31,216.61

Step by Step Solution

1. Step 1: Write the proportion equation
   50,343.72 : 69,457.05 = 31,216.61 : x
2. Step 2: Convert to fraction form
   50,343.72/69,457.05 = 31,216.61/x
3. Step 3: Cross multiply
   50,343.72x = 69,457.05 × 31,216.61
4. Step 4: Simplify right side
   50,343.72x = 2,168,213,294.32
5. Step 5: Solve for x
   x = 2,168,213,294.32/50,343.72
6. Step 6: Final answer
   x = 43,068.20