Finding the Fourth Proportional to 66,123, 91,258.06 and 40,976.28

Step by Step Solution

1. Step 1: Write the proportion equation
   66,123 : 91,258.06 = 40,976.28 : x
2. Step 2: Convert to fraction form
   66,123/91,258.06 = 40,976.28/x
3. Step 3: Cross multiply
   66,123x = 91,258.06 × 40,976.28
4. Step 4: Simplify right side
   66,123x = 3,739,415,818.82
5. Step 5: Solve for x
   x = 3,739,415,818.82/66,123
6. Step 6: Final answer
   x = 56,552.42