Finding the Fourth Proportional to 52,428.65, 72,361.50 and 31,219.61

Step by Step Solution

1. Step 1: Write the proportion equation
   52,428.65 : 72,361.50 = 31,219.61 : x
2. Step 2: Convert to fraction form
   52,428.65/72,361.50 = 31,219.61/x
3. Step 3: Cross multiply
   52,428.65x = 72,361.50 × 31,219.61
4. Step 4: Simplify right side
   52,428.65x = 2,259,097,809.02
5. Step 5: Solve for x
   x = 2,259,097,809.02/52,428.65
6. Step 6: Final answer
   x = 43,088.99