Finding the Fourth Proportional to 142,091.52, 213,100.80 and 42,228.16

Step by Step Solution

1. Step 1: Write the proportion equation
   142,091.52 : 213,100.80 = 42,228.16 : x
2. Step 2: Convert to fraction form
   142,091.52/213,100.80 = 42,228.16/x
3. Step 3: Cross multiply
   142,091.52x = 213,100.80 × 42,228.16
4. Step 4: Simplify right side
   142,091.52x = 8,998,854,678.53
5. Step 5: Solve for x
   x = 8,998,854,678.53/142,091.52
6. Step 6: Final answer
   x = 63,331.40