Finding the Fourth Proportional to 77,729.49, 107,152.38 and 54,998.46

Step by Step Solution

1. Step 1: Write the proportion equation
   77,729.49 : 107,152.38 = 54,998.46 : x
2. Step 2: Convert to fraction form
   77,729.49/107,152.38 = 54,998.46/x
3. Step 3: Cross multiply
   77,729.49x = 107,152.38 × 54,998.46
4. Step 4: Simplify right side
   77,729.49x = 5,893,215,885.33
5. Step 5: Solve for x
   x = 5,893,215,885.33/77,729.49
6. Step 6: Final answer
   x = 75,816.99