Finding the Fourth Proportional to 142,187.52, 196,216.32 and 78,526.08

Step by Step Solution

1. Step 1: Write the proportion equation
   142,187.52 : 196,216.32 = 78,526.08 : x
2. Step 2: Convert to fraction form
   142,187.52/196,216.32 = 78,526.08/x
3. Step 3: Cross multiply
   142,187.52x = 196,216.32 × 78,526.08
4. Step 4: Simplify right side
   142,187.52x = 15,408,098,441.63
5. Step 5: Solve for x
   x = 15,408,098,441.63/142,187.52
6. Step 6: Final answer
   x = 108,364.63