Finding the Fourth Proportional to 101,008.58, 139,392.79 and 55,688.22

Step by Step Solution

1. Step 1: Write the proportion equation
   101,008.58 : 139,392.79 = 55,688.22 : x
2. Step 2: Convert to fraction form
   101,008.58/139,392.79 = 55,688.22/x
3. Step 3: Cross multiply
   101,008.58x = 139,392.79 × 55,688.22
4. Step 4: Simplify right side
   101,008.58x = 7,762,536,216.71
5. Step 5: Solve for x
   x = 7,762,536,216.71/101,008.58
6. Step 6: Final answer
   x = 76,850.27