Finding the Fourth Proportional to 53,980, 74,502.48 and 31,624

Step by Step Solution

1. Step 1: Write the proportion equation
   53,980 : 74,502.48 = 31,624 : x
2. Step 2: Convert to fraction form
   53,980/74,502.48 = 31,624/x
3. Step 3: Cross multiply
   53,980x = 74,502.48 × 31,624
4. Step 4: Simplify right side
   53,980x = 2,356,066,427.52
5. Step 5: Solve for x
   x = 2,356,066,427.52/53,980
6. Step 6: Final answer
   x = 43,647.03