Finding the Fourth Proportional to 153,078.57, 229,622.18 and 42,270.57

Step by Step Solution

1. Step 1: Write the proportion equation
   153,078.57 : 229,622.18 = 42,270.57 : x
2. Step 2: Convert to fraction form
   153,078.57/229,622.18 = 42,270.57/x
3. Step 3: Cross multiply
   153,078.57x = 229,622.18 × 42,270.57
4. Step 4: Simplify right side
   153,078.57x = 9,706,260,221.89
5. Step 5: Solve for x
   x = 9,706,260,221.89/153,078.57
6. Step 6: Final answer
   x = 63,407.05