Finding the Fourth Proportional to 79,101.62, 118,667.01 and 64,439

Step by Step Solution

1. Step 1: Write the proportion equation
   79,101.62 : 118,667.01 = 64,439 : x
2. Step 2: Convert to fraction form
   79,101.62/118,667.01 = 64,439/x
3. Step 3: Cross multiply
   79,101.62x = 118,667.01 × 64,439
4. Step 4: Simplify right side
   79,101.62x = 7,646,783,457.39
5. Step 5: Solve for x
   x = 7,646,783,457.39/79,101.62
6. Step 6: Final answer
   x = 96,670.38