Finding the Fourth Proportional to 102,118.98, 140,921.73 and 56,796.83

Step by Step Solution

1. Step 1: Write the proportion equation
   102,118.98 : 140,921.73 = 56,796.83 : x
2. Step 2: Convert to fraction form
   102,118.98/140,921.73 = 56,796.83/x
3. Step 3: Cross multiply
   102,118.98x = 140,921.73 × 56,796.83
4. Step 4: Simplify right side
   102,118.98x = 8,003,906,837.51
5. Step 5: Solve for x
   x = 8,003,906,837.51/102,118.98
6. Step 6: Final answer
   x = 78,378.25