Finding the Fourth Proportional to 101,003.18, 139,385.38 and 55,682.78

Step by Step Solution

1. Step 1: Write the proportion equation
   101,003.18 : 139,385.38 = 55,682.78 : x
2. Step 2: Convert to fraction form
   101,003.18/139,385.38 = 55,682.78/x
3. Step 3: Cross multiply
   101,003.18x = 139,385.38 × 55,682.78
4. Step 4: Simplify right side
   101,003.18x = 7,761,365,449.76
5. Step 5: Solve for x
   x = 7,761,365,449.76/101,003.18
6. Step 6: Final answer
   x = 76,842.78