Finding the Fourth Proportional to 348,528.72, 522,743.67 and 111,840.78

Step by Step Solution

1. Step 1: Write the proportion equation
   348,528.72 : 522,743.67 = 111,840.78 : x
2. Step 2: Convert to fraction form
   348,528.72/522,743.67 = 111,840.78/x
3. Step 3: Cross multiply
   348,528.72x = 522,743.67 × 111,840.78
4. Step 4: Simplify right side
   348,528.72x = 58,464,059,792.86
5. Step 5: Solve for x
   x = 58,464,059,792.86/348,528.72
6. Step 6: Final answer
   x = 167,745.31