Finding the Fourth Proportional to 56,987.56, 78,642.78 and 31,495.84

Step by Step Solution

1. Step 1: Write the proportion equation
   56,987.56 : 78,642.78 = 31,495.84 : x
2. Step 2: Convert to fraction form
   56,987.56/78,642.78 = 31,495.84/x
3. Step 3: Cross multiply
   56,987.56x = 78,642.78 × 31,495.84
4. Step 4: Simplify right side
   56,987.56x = 2,476,920,416.04
5. Step 5: Solve for x
   x = 2,476,920,416.04/56,987.56
6. Step 6: Final answer
   x = 43,464.23