Finding the Fourth Proportional to 112,786.06, 155,649.94 and 64,401.10

Step by Step Solution

1. Step 1: Write the proportion equation
   112,786.06 : 155,649.94 = 64,401.10 : x
2. Step 2: Convert to fraction form
   112,786.06/155,649.94 = 64,401.10/x
3. Step 3: Cross multiply
   112,786.06x = 155,649.94 × 64,401.10
4. Step 4: Simplify right side
   112,786.06x = 10,024,027,350.93
5. Step 5: Solve for x
   x = 10,024,027,350.93/112,786.06
6. Step 6: Final answer
   x = 88,876.47