Finding the Fourth Proportional to 112,443.03, 155,189.25 and 64,687.05

Step by Step Solution

1. Step 1: Write the proportion equation
   112,443.03 : 155,189.25 = 64,687.05 : x
2. Step 2: Convert to fraction form
   112,443.03/155,189.25 = 64,687.05/x
3. Step 3: Cross multiply
   112,443.03x = 155,189.25 × 64,687.05
4. Step 4: Simplify right side
   112,443.03x = 10,038,734,774.21
5. Step 5: Solve for x
   x = 10,038,734,774.21/112,443.03
6. Step 6: Final answer
   x = 89,278.41