Finding the Fourth Proportional to 142,659.22, 213,988.32 and 42,818.98

Step by Step Solution

1. Step 1: Write the proportion equation
   142,659.22 : 213,988.32 = 42,818.98 : x
2. Step 2: Convert to fraction form
   142,659.22/213,988.32 = 42,818.98/x
3. Step 3: Cross multiply
   142,659.22x = 213,988.32 × 42,818.98
4. Step 4: Simplify right side
   142,659.22x = 9,162,761,594.31
5. Step 5: Solve for x
   x = 9,162,761,594.31/142,659.22
6. Step 6: Final answer
   x = 64,228.32