Finding the Fourth Proportional to 78,873.02, 108,868.07 and 55,007.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,873.02 : 108,868.07 = 55,007.38 : x
2. Step 2: Convert to fraction form
   78,873.02/108,868.07 = 55,007.38/x
3. Step 3: Cross multiply
   78,873.02x = 108,868.07 × 55,007.38
4. Step 4: Simplify right side
   78,873.02x = 5,988,547,021.32
5. Step 5: Solve for x
   x = 5,988,547,021.32/78,873.02
6. Step 6: Final answer
   x = 75,926.43