Finding the Fourth Proportional to 79,212.62, 109,323.59 and 45,213.31

Step by Step Solution

1. Step 1: Write the proportion equation
   79,212.62 : 109,323.59 = 45,213.31 : x
2. Step 2: Convert to fraction form
   79,212.62/109,323.59 = 45,213.31/x
3. Step 3: Cross multiply
   79,212.62x = 109,323.59 × 45,213.31
4. Step 4: Simplify right side
   79,212.62x = 4,942,881,364.98
5. Step 5: Solve for x
   x = 4,942,881,364.98/79,212.62
6. Step 6: Final answer
   x = 62,400.18