Finding the Fourth Proportional to 56,992.56, 78,649.56 and 31,498.20

Step by Step Solution

1. Step 1: Write the proportion equation
   56,992.56 : 78,649.56 = 31,498.20 : x
2. Step 2: Convert to fraction form
   56,992.56/78,649.56 = 31,498.20/x
3. Step 3: Cross multiply
   56,992.56x = 78,649.56 × 31,498.20
4. Step 4: Simplify right side
   56,992.56x = 2,477,319,570.79
5. Step 5: Solve for x
   x = 2,477,319,570.79/56,992.56
6. Step 6: Final answer
   x = 43,467.42