Finding the Fourth Proportional to 56,988, 78,642.96 and 31,496

Step by Step Solution

1. Step 1: Write the proportion equation
   56,988 : 78,642.96 = 31,496 : x
2. Step 2: Convert to fraction form
   56,988/78,642.96 = 31,496/x
3. Step 3: Cross multiply
   56,988x = 78,642.96 × 31,496
4. Step 4: Simplify right side
   56,988x = 2,476,938,668.16
5. Step 5: Solve for x
   x = 2,476,938,668.16/56,988
6. Step 6: Final answer
   x = 43,464.21