Finding the Fourth Proportional to 59,188.80, 81,604.32 and 42,212.40

Step by Step Solution

1. Step 1: Write the proportion equation
   59,188.80 : 81,604.32 = 42,212.40 : x
2. Step 2: Convert to fraction form
   59,188.80/81,604.32 = 42,212.40/x
3. Step 3: Cross multiply
   59,188.80x = 81,604.32 × 42,212.40
4. Step 4: Simplify right side
   59,188.80x = 3,444,714,197.57
5. Step 5: Solve for x
   x = 3,444,714,197.57/59,188.80
6. Step 6: Final answer
   x = 58,198.75