Finding the Fourth Proportional to 142,141.23, 196,155.33 and 77,610.60

Step by Step Solution

1. Step 1: Write the proportion equation
   142,141.23 : 196,155.33 = 77,610.60 : x
2. Step 2: Convert to fraction form
   142,141.23/196,155.33 = 77,610.60/x
3. Step 3: Cross multiply
   142,141.23x = 196,155.33 × 77,610.60
4. Step 4: Simplify right side
   142,141.23x = 15,223,732,854.50
5. Step 5: Solve for x
   x = 15,223,732,854.50/142,141.23
6. Step 6: Final answer
   x = 107,102.86