Finding the Fourth Proportional to 101,010.50, 139,398.82 and 56,298.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,010.50 : 139,398.82 = 56,298.50 : x
2. Step 2: Convert to fraction form
   101,010.50/139,398.82 = 56,298.50/x
3. Step 3: Cross multiply
   101,010.50x = 139,398.82 × 56,298.50
4. Step 4: Simplify right side
   101,010.50x = 7,847,944,467.77
5. Step 5: Solve for x
   x = 7,847,944,467.77/101,010.50
6. Step 6: Final answer
   x = 77,694.34