Finding the Fourth Proportional to 65,160.99, 89,937.45 and 42,460.74

Step by Step Solution

1. Step 1: Write the proportion equation
   65,160.99 : 89,937.45 = 42,460.74 : x
2. Step 2: Convert to fraction form
   65,160.99/89,937.45 = 42,460.74/x
3. Step 3: Cross multiply
   65,160.99x = 89,937.45 × 42,460.74
4. Step 4: Simplify right side
   65,160.99x = 3,818,810,680.71
5. Step 5: Solve for x
   x = 3,818,810,680.71/65,160.99
6. Step 6: Final answer
   x = 58,605.78