Finding the Fourth Proportional to 200,298.72, 300,428.56 and 52,554.72

Step by Step Solution

1. Step 1: Write the proportion equation
   200,298.72 : 300,428.56 = 52,554.72 : x
2. Step 2: Convert to fraction form
   200,298.72/300,428.56 = 52,554.72/x
3. Step 3: Cross multiply
   200,298.72x = 300,428.56 × 52,554.72
4. Step 4: Simplify right side
   200,298.72x = 15,788,938,850.80
5. Step 5: Solve for x
   x = 15,788,938,850.80/200,298.72
6. Step 6: Final answer
   x = 78,826.96