Finding the Fourth Proportional to 99,541.92, 137,363.76 and 54,219

Step by Step Solution

1. Step 1: Write the proportion equation
   99,541.92 : 137,363.76 = 54,219 : x
2. Step 2: Convert to fraction form
   99,541.92/137,363.76 = 54,219/x
3. Step 3: Cross multiply
   99,541.92x = 137,363.76 × 54,219
4. Step 4: Simplify right side
   99,541.92x = 7,447,725,703.44
5. Step 5: Solve for x
   x = 7,447,725,703.44/99,541.92
6. Step 6: Final answer
   x = 74,819.99