Finding the Fourth Proportional to 328,184.28, 492,276.34 and 78,866.28

Step by Step Solution

1. Step 1: Write the proportion equation
   328,184.28 : 492,276.34 = 78,866.28 : x
2. Step 2: Convert to fraction form
   328,184.28/492,276.34 = 78,866.28/x
3. Step 3: Cross multiply
   328,184.28x = 492,276.34 × 78,866.28
4. Step 4: Simplify right side
   328,184.28x = 38,824,003,667.82
5. Step 5: Solve for x
   x = 38,824,003,667.82/328,184.28
6. Step 6: Final answer
   x = 118,299.40