Finding the Fourth Proportional to 147,836, 221,783.20 and 75,606.72

Step by Step Solution

1. Step 1: Write the proportion equation
   147,836 : 221,783.20 = 75,606.72 : x
2. Step 2: Convert to fraction form
   147,836/221,783.20 = 75,606.72/x
3. Step 3: Cross multiply
   147,836x = 221,783.20 × 75,606.72
4. Step 4: Simplify right side
   147,836x = 16,768,300,303.10
5. Step 5: Solve for x
   x = 16,768,300,303.10/147,836
6. Step 6: Final answer
   x = 113,425.01