Finding the Fourth Proportional to 141,899.78, 195,830.52 and 78,237.48

Step by Step Solution

1. Step 1: Write the proportion equation
   141,899.78 : 195,830.52 = 78,237.48 : x
2. Step 2: Convert to fraction form
   141,899.78/195,830.52 = 78,237.48/x
3. Step 3: Cross multiply
   141,899.78x = 195,830.52 × 78,237.48
4. Step 4: Simplify right side
   141,899.78x = 15,321,286,391.89
5. Step 5: Solve for x
   x = 15,321,286,391.89/141,899.78
6. Step 6: Final answer
   x = 107,972.59