Finding the Fourth Proportional to 123,948.78, 185,673.69 and 57,297.12

Step by Step Solution

1. Step 1: Write the proportion equation
   123,948.78 : 185,673.69 = 57,297.12 : x
2. Step 2: Convert to fraction form
   123,948.78/185,673.69 = 57,297.12/x
3. Step 3: Cross multiply
   123,948.78x = 185,673.69 × 57,297.12
4. Step 4: Simplify right side
   123,948.78x = 10,638,567,696.77
5. Step 5: Solve for x
   x = 10,638,567,696.77/123,948.78
6. Step 6: Final answer
   x = 85,830.35