Finding the Fourth Proportional to 147,871.08, 221,725.56 and 72,826.20

Step by Step Solution

1. Step 1: Write the proportion equation
   147,871.08 : 221,725.56 = 72,826.20 : x
2. Step 2: Convert to fraction form
   147,871.08/221,725.56 = 72,826.20/x
3. Step 3: Cross multiply
   147,871.08x = 221,725.56 × 72,826.20
4. Step 4: Simplify right side
   147,871.08x = 16,147,429,977.67
5. Step 5: Solve for x
   x = 16,147,429,977.67/147,871.08
6. Step 6: Final answer
   x = 109,199.38