Finding the Fourth Proportional to 55,849.50, 77,072.43 and 30,699.18

Step by Step Solution

1. Step 1: Write the proportion equation
   55,849.50 : 77,072.43 = 30,699.18 : x
2. Step 2: Convert to fraction form
   55,849.50/77,072.43 = 30,699.18/x
3. Step 3: Cross multiply
   55,849.50x = 77,072.43 × 30,699.18
4. Step 4: Simplify right side
   55,849.50x = 2,366,060,401.61
5. Step 5: Solve for x
   x = 2,366,060,401.61/55,849.50
6. Step 6: Final answer
   x = 42,364.93