Finding the Fourth Proportional to 47,085.68, 64,809.23 and 42,599.90

Step by Step Solution

1. Step 1: Write the proportion equation
   47,085.68 : 64,809.23 = 42,599.90 : x
2. Step 2: Convert to fraction form
   47,085.68/64,809.23 = 42,599.90/x
3. Step 3: Cross multiply
   47,085.68x = 64,809.23 × 42,599.90
4. Step 4: Simplify right side
   47,085.68x = 2,760,866,180.03
5. Step 5: Solve for x
   x = 2,760,866,180.03/47,085.68
6. Step 6: Final answer
   x = 58,634.95