Finding the Fourth Proportional to 66,142.98, 91,278.84 and 35,929.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,142.98 : 91,278.84 = 35,929.50 : x
2. Step 2: Convert to fraction form
   66,142.98/91,278.84 = 35,929.50/x
3. Step 3: Cross multiply
   66,142.98x = 91,278.84 × 35,929.50
4. Step 4: Simplify right side
   66,142.98x = 3,279,603,081.78
5. Step 5: Solve for x
   x = 3,279,603,081.78/66,142.98
6. Step 6: Final answer
   x = 49,583.54