Finding the Fourth Proportional to 142,592.49, 196,792.61 and 106,719.75

Step by Step Solution

1. Step 1: Write the proportion equation
   142,592.49 : 196,792.61 = 106,719.75 : x
2. Step 2: Convert to fraction form
   142,592.49/196,792.61 = 106,719.75/x
3. Step 3: Cross multiply
   142,592.49x = 196,792.61 × 106,719.75
4. Step 4: Simplify right side
   142,592.49x = 21,001,657,607.45
5. Step 5: Solve for x
   x = 21,001,657,607.45/142,592.49
6. Step 6: Final answer
   x = 147,284.46