Finding the Fourth Proportional to 66,549.34, 91,879.54 and 42,363.95

Step by Step Solution

1. Step 1: Write the proportion equation
   66,549.34 : 91,879.54 = 42,363.95 : x
2. Step 2: Convert to fraction form
   66,549.34/91,879.54 = 42,363.95/x
3. Step 3: Cross multiply
   66,549.34x = 91,879.54 × 42,363.95
4. Step 4: Simplify right side
   66,549.34x = 3,892,380,362.37
5. Step 5: Solve for x
   x = 3,892,380,362.37/66,549.34
6. Step 6: Final answer
   x = 58,488.64