Finding the Fourth Proportional to 53,458, 73,687.05 and 42,109.53

Step by Step Solution

1. Step 1: Write the proportion equation
   53,458 : 73,687.05 = 42,109.53 : x
2. Step 2: Convert to fraction form
   53,458/73,687.05 = 42,109.53/x
3. Step 3: Cross multiply
   53,458x = 73,687.05 × 42,109.53
4. Step 4: Simplify right side
   53,458x = 3,102,927,042.59
5. Step 5: Solve for x
   x = 3,102,927,042.59/53,458
6. Step 6: Final answer
   x = 58,044.20