Finding the Fourth Proportional to 100,822.82, 139,130.72 and 55,499.87

Step by Step Solution

1. Step 1: Write the proportion equation
   100,822.82 : 139,130.72 = 55,499.87 : x
2. Step 2: Convert to fraction form
   100,822.82/139,130.72 = 55,499.87/x
3. Step 3: Cross multiply
   100,822.82x = 139,130.72 × 55,499.87
4. Step 4: Simplify right side
   100,822.82x = 7,721,736,943.33
5. Step 5: Solve for x
   x = 7,721,736,943.33/100,822.82
6. Step 6: Final answer
   x = 76,587.19