Finding the Fourth Proportional to 57,510.18, 86,265.72 and 20,070.09

Step by Step Solution

1. Step 1: Write the proportion equation
   57,510.18 : 86,265.72 = 20,070.09 : x
2. Step 2: Convert to fraction form
   57,510.18/86,265.72 = 20,070.09/x
3. Step 3: Cross multiply
   57,510.18x = 86,265.72 × 20,070.09
4. Step 4: Simplify right side
   57,510.18x = 1,731,360,764.31
5. Step 5: Solve for x
   x = 1,731,360,764.31/57,510.18
6. Step 6: Final answer
   x = 30,105.29