Finding the Fourth Proportional to 112,804.88, 155,645.47 and 64,391.36

Step by Step Solution

1. Step 1: Write the proportion equation
   112,804.88 : 155,645.47 = 64,391.36 : x
2. Step 2: Convert to fraction form
   112,804.88/155,645.47 = 64,391.36/x
3. Step 3: Cross multiply
   112,804.88x = 155,645.47 × 64,391.36
4. Step 4: Simplify right side
   112,804.88x = 10,022,222,974.50
5. Step 5: Solve for x
   x = 10,022,222,974.50/112,804.88
6. Step 6: Final answer
   x = 88,845.65