Finding the Fourth Proportional to 78,892.02, 108,931.37 and 52,072.65

Step by Step Solution

1. Step 1: Write the proportion equation
   78,892.02 : 108,931.37 = 52,072.65 : x
2. Step 2: Convert to fraction form
   78,892.02/108,931.37 = 52,072.65/x
3. Step 3: Cross multiply
   78,892.02x = 108,931.37 × 52,072.65
4. Step 4: Simplify right side
   78,892.02x = 5,672,344,843.67
5. Step 5: Solve for x
   x = 5,672,344,843.67/78,892.02
6. Step 6: Final answer
   x = 71,900.11