Finding the Fourth Proportional to 53,111.98, 73,294.53 and 28,913.05

Step by Step Solution

1. Step 1: Write the proportion equation
   53,111.98 : 73,294.53 = 28,913.05 : x
2. Step 2: Convert to fraction form
   53,111.98/73,294.53 = 28,913.05/x
3. Step 3: Cross multiply
   53,111.98x = 73,294.53 × 28,913.05
4. Step 4: Simplify right side
   53,111.98x = 2,119,168,410.62
5. Step 5: Solve for x
   x = 2,119,168,410.62/53,111.98
6. Step 6: Final answer
   x = 39,900.01