Finding the Fourth Proportional to 145,123.09, 217,746.60 and 60,904.15

Step by Step Solution

1. Step 1: Write the proportion equation
   145,123.09 : 217,746.60 = 60,904.15 : x
2. Step 2: Convert to fraction form
   145,123.09/217,746.60 = 60,904.15/x
3. Step 3: Cross multiply
   145,123.09x = 217,746.60 × 60,904.15
4. Step 4: Simplify right side
   145,123.09x = 13,261,671,588.39
5. Step 5: Solve for x
   x = 13,261,671,588.39/145,123.09
6. Step 6: Final answer
   x = 91,382.23