Finding the Fourth Proportional to 99,667.62, 149,353.80 and 82,023.58

Step by Step Solution

1. Step 1: Write the proportion equation
   99,667.62 : 149,353.80 = 82,023.58 : x
2. Step 2: Convert to fraction form
   99,667.62/149,353.80 = 82,023.58/x
3. Step 3: Cross multiply
   99,667.62x = 149,353.80 × 82,023.58
4. Step 4: Simplify right side
   99,667.62x = 12,250,533,362.60
5. Step 5: Solve for x
   x = 12,250,533,362.60/99,667.62
6. Step 6: Final answer
   x = 122,913.87