Finding the Fourth Proportional to 106,419.84, 146,706.72 and 83,719.37

Step by Step Solution

1. Step 1: Write the proportion equation
   106,419.84 : 146,706.72 = 83,719.37 : x
2. Step 2: Convert to fraction form
   106,419.84/146,706.72 = 83,719.37/x
3. Step 3: Cross multiply
   106,419.84x = 146,706.72 × 83,719.37
4. Step 4: Simplify right side
   106,419.84x = 12,282,194,173.17
5. Step 5: Solve for x
   x = 12,282,194,173.17/106,419.84
6. Step 6: Final answer
   x = 115,412.64