Finding the Fourth Proportional to 102,667.01, 141,678.97 and 57,345.63

Step by Step Solution

1. Step 1: Write the proportion equation
   102,667.01 : 141,678.97 = 57,345.63 : x
2. Step 2: Convert to fraction form
   102,667.01/141,678.97 = 57,345.63/x
3. Step 3: Cross multiply
   102,667.01x = 141,678.97 × 57,345.63
4. Step 4: Simplify right side
   102,667.01x = 8,124,669,294.84
5. Step 5: Solve for x
   x = 8,124,669,294.84/102,667.01
6. Step 6: Final answer
   x = 79,136.12