Finding the Fourth Proportional to 112,383.52, 155,093.96 and 64,636.90

Step by Step Solution

1. Step 1: Write the proportion equation
   112,383.52 : 155,093.96 = 64,636.90 : x
2. Step 2: Convert to fraction form
   112,383.52/155,093.96 = 64,636.90/x
3. Step 3: Cross multiply
   112,383.52x = 155,093.96 × 64,636.90
4. Step 4: Simplify right side
   112,383.52x = 10,024,792,783.12
5. Step 5: Solve for x
   x = 10,024,792,783.12/112,383.52
6. Step 6: Final answer
   x = 89,201.63