Finding the Fourth Proportional to 72,716.56, 108,880.32 and 42,706.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72,716.56 : 108,880.32 = 42,706.08 : x
2. Step 2: Convert to fraction form
   72,716.56/108,880.32 = 42,706.08/x
3. Step 3: Cross multiply
   72,716.56x = 108,880.32 × 42,706.08
4. Step 4: Simplify right side
   72,716.56x = 4,649,851,656.35
5. Step 5: Solve for x
   x = 4,649,851,656.35/72,716.56
6. Step 6: Final answer
   x = 63,944.88