Finding the Fourth Proportional to 105,597.87, 158,395.58 and 42,434.07

Step by Step Solution

1. Step 1: Write the proportion equation
   105,597.87 : 158,395.58 = 42,434.07 : x
2. Step 2: Convert to fraction form
   105,597.87/158,395.58 = 42,434.07/x
3. Step 3: Cross multiply
   105,597.87x = 158,395.58 × 42,434.07
4. Step 4: Simplify right side
   105,597.87x = 6,721,369,129.41
5. Step 5: Solve for x
   x = 6,721,369,129.41/105,597.87
6. Step 6: Final answer
   x = 63,650.61