Finding the Fourth Proportional to 100,977.94, 139,348.81 and 55,656.01

Step by Step Solution

1. Step 1: Write the proportion equation
   100,977.94 : 139,348.81 = 55,656.01 : x
2. Step 2: Convert to fraction form
   100,977.94/139,348.81 = 55,656.01/x
3. Step 3: Cross multiply
   100,977.94x = 139,348.81 × 55,656.01
4. Step 4: Simplify right side
   100,977.94x = 7,755,598,693.54
5. Step 5: Solve for x
   x = 7,755,598,693.54/100,977.94
6. Step 6: Final answer
   x = 76,804.88