Finding the Fourth Proportional to 53,619.27, 74,083.59 and 42,375

Step by Step Solution

1. Step 1: Write the proportion equation
   53,619.27 : 74,083.59 = 42,375 : x
2. Step 2: Convert to fraction form
   53,619.27/74,083.59 = 42,375/x
3. Step 3: Cross multiply
   53,619.27x = 74,083.59 × 42,375
4. Step 4: Simplify right side
   53,619.27x = 3,139,292,126.25
5. Step 5: Solve for x
   x = 3,139,292,126.25/53,619.27
6. Step 6: Final answer
   x = 58,547.83