Finding the Fourth Proportional to 66,492.09, 91,722.78 and 42,591.83

Step by Step Solution

1. Step 1: Write the proportion equation
   66,492.09 : 91,722.78 = 42,591.83 : x
2. Step 2: Convert to fraction form
   66,492.09/91,722.78 = 42,591.83/x
3. Step 3: Cross multiply
   66,492.09x = 91,722.78 × 42,591.83
4. Step 4: Simplify right side
   66,492.09x = 3,906,640,594.27
5. Step 5: Solve for x
   x = 3,906,640,594.27/66,492.09
6. Step 6: Final answer
   x = 58,753.46