Finding the Fourth Proportional to 102,383.79, 141,290.33 and 57,064.69

Step by Step Solution

1. Step 1: Write the proportion equation
   102,383.79 : 141,290.33 = 57,064.69 : x
2. Step 2: Convert to fraction form
   102,383.79/141,290.33 = 57,064.69/x
3. Step 3: Cross multiply
   102,383.79x = 141,290.33 × 57,064.69
4. Step 4: Simplify right side
   102,383.79x = 8,062,688,881.45
5. Step 5: Solve for x
   x = 8,062,688,881.45/102,383.79
6. Step 6: Final answer
   x = 78,749.67