Finding the Fourth Proportional to 79,236.50, 109,326.79 and 46,978.69

Step by Step Solution

1. Step 1: Write the proportion equation
   79,236.50 : 109,326.79 = 46,978.69 : x
2. Step 2: Convert to fraction form
   79,236.50/109,326.79 = 46,978.69/x
3. Step 3: Cross multiply
   79,236.50x = 109,326.79 × 46,978.69
4. Step 4: Simplify right side
   79,236.50x = 5,136,029,376.11
5. Step 5: Solve for x
   x = 5,136,029,376.11/79,236.50
6. Step 6: Final answer
   x = 64,818.98