Finding the Fourth Proportional to 65,036.71, 89,793.53 and 42,109.66

Step by Step Solution

1. Step 1: Write the proportion equation
   65,036.71 : 89,793.53 = 42,109.66 : x
2. Step 2: Convert to fraction form
   65,036.71/89,793.53 = 42,109.66/x
3. Step 3: Cross multiply
   65,036.71x = 89,793.53 × 42,109.66
4. Step 4: Simplify right side
   65,036.71x = 3,781,175,018.50
5. Step 5: Solve for x
   x = 3,781,175,018.50/65,036.71
6. Step 6: Final answer
   x = 58,139.09