Finding the Fourth Proportional to 112,675.44, 155,494.20 and 64,920.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,675.44 : 155,494.20 = 64,920.72 : x
2. Step 2: Convert to fraction form
   112,675.44/155,494.20 = 64,920.72/x
3. Step 3: Cross multiply
   112,675.44x = 155,494.20 × 64,920.72
4. Step 4: Simplify right side
   112,675.44x = 10,094,795,419.82
5. Step 5: Solve for x
   x = 10,094,795,419.82/112,675.44
6. Step 6: Final answer
   x = 89,591.80