Finding the Fourth Proportional to 78,723.56, 108,640.72 and 48,101.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,723.56 : 108,640.72 = 48,101.64 : x
2. Step 2: Convert to fraction form
   78,723.56/108,640.72 = 48,101.64/x
3. Step 3: Cross multiply
   78,723.56x = 108,640.72 × 48,101.64
4. Step 4: Simplify right side
   78,723.56x = 5,225,796,802.78
5. Step 5: Solve for x
   x = 5,225,796,802.78/78,723.56
6. Step 6: Final answer
   x = 66,381.61