Finding the Fourth Proportional to 103,518.04, 142,899.24 and 71,297.86

Step by Step Solution

1. Step 1: Write the proportion equation
   103,518.04 : 142,899.24 = 71,297.86 : x
2. Step 2: Convert to fraction form
   103,518.04/142,899.24 = 71,297.86/x
3. Step 3: Cross multiply
   103,518.04x = 142,899.24 × 71,297.86
4. Step 4: Simplify right side
   103,518.04x = 10,188,410,007.63
5. Step 5: Solve for x
   x = 10,188,410,007.63/103,518.04
6. Step 6: Final answer
   x = 98,421.59