Finding the Fourth Proportional to 142,602.87, 196,792.01 and 78,076.29

Step by Step Solution

1. Step 1: Write the proportion equation
   142,602.87 : 196,792.01 = 78,076.29 : x
2. Step 2: Convert to fraction form
   142,602.87/196,792.01 = 78,076.29/x
3. Step 3: Cross multiply
   142,602.87x = 196,792.01 × 78,076.29
4. Step 4: Simplify right side
   142,602.87x = 15,364,789,499.66
5. Step 5: Solve for x
   x = 15,364,789,499.66/142,602.87
6. Step 6: Final answer
   x = 107,745.31