Finding the Fourth Proportional to 55,839, 77,057.82 and 30,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,839 : 77,057.82 = 30,688.50 : x
2. Step 2: Convert to fraction form
   55,839/77,057.82 = 30,688.50/x
3. Step 3: Cross multiply
   55,839x = 77,057.82 × 30,688.50
4. Step 4: Simplify right side
   55,839x = 2,364,788,909.07
5. Step 5: Solve for x
   x = 2,364,788,909.07/55,839
6. Step 6: Final answer
   x = 42,350.13