Finding the Fourth Proportional to 142,050.84, 196,041.24 and 81,642.57

Step by Step Solution

1. Step 1: Write the proportion equation
   142,050.84 : 196,041.24 = 81,642.57 : x
2. Step 2: Convert to fraction form
   142,050.84/196,041.24 = 81,642.57/x
3. Step 3: Cross multiply
   142,050.84x = 196,041.24 × 81,642.57
4. Step 4: Simplify right side
   142,050.84x = 16,005,310,659.59
5. Step 5: Solve for x
   x = 16,005,310,659.59/142,050.84
6. Step 6: Final answer
   x = 112,673.12