Finding the Fourth Proportional to 142,795.99, 197,061 and 78,260.95

Step by Step Solution

1. Step 1: Write the proportion equation
   142,795.99 : 197,061 = 78,260.95 : x
2. Step 2: Convert to fraction form
   142,795.99/197,061 = 78,260.95/x
3. Step 3: Cross multiply
   142,795.99x = 197,061 × 78,260.95
4. Step 4: Simplify right side
   142,795.99x = 15,422,181,067.95
5. Step 5: Solve for x
   x = 15,422,181,067.95/142,795.99
6. Step 6: Final answer
   x = 108,001.50