Finding the Fourth Proportional to 109,426.23, 164,136.09 and 45,377.91

Step by Step Solution

1. Step 1: Write the proportion equation
   109,426.23 : 164,136.09 = 45,377.91 : x
2. Step 2: Convert to fraction form
   109,426.23/164,136.09 = 45,377.91/x
3. Step 3: Cross multiply
   109,426.23x = 164,136.09 × 45,377.91
4. Step 4: Simplify right side
   109,426.23x = 7,448,152,719.77
5. Step 5: Solve for x
   x = 7,448,152,719.77/109,426.23
6. Step 6: Final answer
   x = 68,065.52