Finding the Fourth Proportional to 112,523.59, 155,297.24 and 64,778.95

Step by Step Solution

1. Step 1: Write the proportion equation
   112,523.59 : 155,297.24 = 64,778.95 : x
2. Step 2: Convert to fraction form
   112,523.59/155,297.24 = 64,778.95/x
3. Step 3: Cross multiply
   112,523.59x = 155,297.24 × 64,778.95
4. Step 4: Simplify right side
   112,523.59x = 10,059,991,675.88
5. Step 5: Solve for x
   x = 10,059,991,675.88/112,523.59
6. Step 6: Final answer
   x = 89,403.40