Finding the Fourth Proportional to 112,965.10, 155,886.22 and 64,565.57

Step by Step Solution

1. Step 1: Write the proportion equation
   112,965.10 : 155,886.22 = 64,565.57 : x
2. Step 2: Convert to fraction form
   112,965.10/155,886.22 = 64,565.57/x
3. Step 3: Cross multiply
   112,965.10x = 155,886.22 × 64,565.57
4. Step 4: Simplify right side
   112,965.10x = 10,064,883,119.87
5. Step 5: Solve for x
   x = 10,064,883,119.87/112,965.10
6. Step 6: Final answer
   x = 89,097.28