Finding the Fourth Proportional to 112,379.76, 155,079.72 and 64,600.56

Step by Step Solution

1. Step 1: Write the proportion equation
   112,379.76 : 155,079.72 = 64,600.56 : x
2. Step 2: Convert to fraction form
   112,379.76/155,079.72 = 64,600.56/x
3. Step 3: Cross multiply
   112,379.76x = 155,079.72 × 64,600.56
4. Step 4: Simplify right side
   112,379.76x = 10,018,236,756.64
5. Step 5: Solve for x
   x = 10,018,236,756.64/112,379.76
6. Step 6: Final answer
   x = 89,146.27