Finding the Fourth Proportional to 53,665.03, 74,061.20 and 31,004.98

Step by Step Solution

1. Step 1: Write the proportion equation
   53,665.03 : 74,061.20 = 31,004.98 : x
2. Step 2: Convert to fraction form
   53,665.03/74,061.20 = 31,004.98/x
3. Step 3: Cross multiply
   53,665.03x = 74,061.20 × 31,004.98
4. Step 4: Simplify right side
   53,665.03x = 2,296,265,917.14
5. Step 5: Solve for x
   x = 2,296,265,917.14/53,665.03
6. Step 6: Final answer
   x = 42,788.87