Finding the Fourth Proportional to 145,112.39, 217,752.62 and 60,865.05

Step by Step Solution

1. Step 1: Write the proportion equation
   145,112.39 : 217,752.62 = 60,865.05 : x
2. Step 2: Convert to fraction form
   145,112.39/217,752.62 = 60,865.05/x
3. Step 3: Cross multiply
   145,112.39x = 217,752.62 × 60,865.05
4. Step 4: Simplify right side
   145,112.39x = 13,253,523,799.61
5. Step 5: Solve for x
   x = 13,253,523,799.61/145,112.39
6. Step 6: Final answer
   x = 91,332.82