Finding the Fourth Proportional to 112,653.69, 155,469.61 and 64,910.13

Step by Step Solution

1. Step 1: Write the proportion equation
   112,653.69 : 155,469.61 = 64,910.13 : x
2. Step 2: Convert to fraction form
   112,653.69/155,469.61 = 64,910.13/x
3. Step 3: Cross multiply
   112,653.69x = 155,469.61 × 64,910.13
4. Step 4: Simplify right side
   112,653.69x = 10,091,552,094.28
5. Step 5: Solve for x
   x = 10,091,552,094.28/112,653.69
6. Step 6: Final answer
   x = 89,580.31