Finding the Fourth Proportional to 66,492.89, 91,760.15 and 42,619.54

Step by Step Solution

1. Step 1: Write the proportion equation
   66,492.89 : 91,760.15 = 42,619.54 : x
2. Step 2: Convert to fraction form
   66,492.89/91,760.15 = 42,619.54/x
3. Step 3: Cross multiply
   66,492.89x = 91,760.15 × 42,619.54
4. Step 4: Simplify right side
   66,492.89x = 3,910,775,170.23
5. Step 5: Solve for x
   x = 3,910,775,170.23/66,492.89
6. Step 6: Final answer
   x = 58,814.94