Finding the Fourth Proportional to 56,987.60, 78,633.16 and 31,835.60

Step by Step Solution

1. Step 1: Write the proportion equation
   56,987.60 : 78,633.16 = 31,835.60 : x
2. Step 2: Convert to fraction form
   56,987.60/78,633.16 = 31,835.60/x
3. Step 3: Cross multiply
   56,987.60x = 78,633.16 × 31,835.60
4. Step 4: Simplify right side
   56,987.60x = 2,503,333,828.50
5. Step 5: Solve for x
   x = 2,503,333,828.50/56,987.60
6. Step 6: Final answer
   x = 43,927.69