Finding the Fourth Proportional to 156,826.56, 216,306.24 and 99,483.36

Step by Step Solution

1. Step 1: Write the proportion equation
   156,826.56 : 216,306.24 = 99,483.36 : x
2. Step 2: Convert to fraction form
   156,826.56/216,306.24 = 99,483.36/x
3. Step 3: Cross multiply
   156,826.56x = 216,306.24 × 99,483.36
4. Step 4: Simplify right side
   156,826.56x = 21,518,871,544.17
5. Step 5: Solve for x
   x = 21,518,871,544.17/156,826.56
6. Step 6: Final answer
   x = 137,214.46