Finding the Fourth Proportional to 65,304.41, 90,139.37 and 42,646.95

Step by Step Solution

1. Step 1: Write the proportion equation
   65,304.41 : 90,139.37 = 42,646.95 : x
2. Step 2: Convert to fraction form
   65,304.41/90,139.37 = 42,646.95/x
3. Step 3: Cross multiply
   65,304.41x = 90,139.37 × 42,646.95
4. Step 4: Simplify right side
   65,304.41x = 3,844,168,992.19
5. Step 5: Solve for x
   x = 3,844,168,992.19/65,304.41
6. Step 6: Final answer
   x = 58,865.39