Finding the Fourth Proportional to 101,008.41, 139,392.57 and 55,688.05

Step by Step Solution

1. Step 1: Write the proportion equation
   101,008.41 : 139,392.57 = 55,688.05 : x
2. Step 2: Convert to fraction form
   101,008.41/139,392.57 = 55,688.05/x
3. Step 3: Cross multiply
   101,008.41x = 139,392.57 × 55,688.05
4. Step 4: Simplify right side
   101,008.41x = 7,762,500,407.79
5. Step 5: Solve for x
   x = 7,762,500,407.79/101,008.41
6. Step 6: Final answer
   x = 76,850.04