Finding the Fourth Proportional to 145,111.39, 217,751.12 and 60,864.05

Step by Step Solution

1. Step 1: Write the proportion equation
   145,111.39 : 217,751.12 = 60,864.05 : x
2. Step 2: Convert to fraction form
   145,111.39/217,751.12 = 60,864.05/x
3. Step 3: Cross multiply
   145,111.39x = 217,751.12 × 60,864.05
4. Step 4: Simplify right side
   145,111.39x = 13,253,215,055.24
5. Step 5: Solve for x
   x = 13,253,215,055.24/145,111.39
6. Step 6: Final answer
   x = 91,331.32