Finding the Fourth Proportional to 112,784.38, 155,647.60 and 64,399.44

Step by Step Solution

1. Step 1: Write the proportion equation
   112,784.38 : 155,647.60 = 64,399.44 : x
2. Step 2: Convert to fraction form
   112,784.38/155,647.60 = 64,399.44/x
3. Step 3: Cross multiply
   112,784.38x = 155,647.60 × 64,399.44
4. Step 4: Simplify right side
   112,784.38x = 10,023,618,277.34
5. Step 5: Solve for x
   x = 10,023,618,277.34/112,784.38
6. Step 6: Final answer
   x = 88,874.17