Finding the Fourth Proportional to 141,642.72, 195,462.72 and 77,980.32

Step by Step Solution

1. Step 1: Write the proportion equation
   141,642.72 : 195,462.72 = 77,980.32 : x
2. Step 2: Convert to fraction form
   141,642.72/195,462.72 = 77,980.32/x
3. Step 3: Cross multiply
   141,642.72x = 195,462.72 × 77,980.32
4. Step 4: Simplify right side
   141,642.72x = 15,242,245,453.67
5. Step 5: Solve for x
   x = 15,242,245,453.67/141,642.72
6. Step 6: Final answer
   x = 107,610.51