Finding the Fourth Proportional to 102,196.69, 141,031.43 and 57,484.69

Step by Step Solution

1. Step 1: Write the proportion equation
   102,196.69 : 141,031.43 = 57,484.69 : x
2. Step 2: Convert to fraction form
   102,196.69/141,031.43 = 57,484.69/x
3. Step 3: Cross multiply
   102,196.69x = 141,031.43 × 57,484.69
4. Step 4: Simplify right side
   102,196.69x = 8,107,147,609.37
5. Step 5: Solve for x
   x = 8,107,147,609.37/102,196.69
6. Step 6: Final answer
   x = 79,328.87