Finding the Fourth Proportional to 112,375.07, 155,082.31 and 64,628.45

Step by Step Solution

1. Step 1: Write the proportion equation
   112,375.07 : 155,082.31 = 64,628.45 : x
2. Step 2: Convert to fraction form
   112,375.07/155,082.31 = 64,628.45/x
3. Step 3: Cross multiply
   112,375.07x = 155,082.31 × 64,628.45
4. Step 4: Simplify right side
   112,375.07x = 10,022,729,317.72
5. Step 5: Solve for x
   x = 10,022,729,317.72/112,375.07
6. Step 6: Final answer
   x = 89,189.97