Finding the Fourth Proportional to 112,488.37, 155,250.83 and 64,732.48

Step by Step Solution

1. Step 1: Write the proportion equation
   112,488.37 : 155,250.83 = 64,732.48 : x
2. Step 2: Convert to fraction form
   112,488.37/155,250.83 = 64,732.48/x
3. Step 3: Cross multiply
   112,488.37x = 155,250.83 × 64,732.48
4. Step 4: Simplify right side
   112,488.37x = 10,049,771,021.66
5. Step 5: Solve for x
   x = 10,049,771,021.66/112,488.37
6. Step 6: Final answer
   x = 89,340.54