Finding the Fourth Proportional to 101,009.04, 139,393.38 and 55,688.63

Step by Step Solution

1. Step 1: Write the proportion equation
   101,009.04 : 139,393.38 = 55,688.63 : x
2. Step 2: Convert to fraction form
   101,009.04/139,393.38 = 55,688.63/x
3. Step 3: Cross multiply
   101,009.04x = 139,393.38 × 55,688.63
4. Step 4: Simplify right side
   101,009.04x = 7,762,626,363.27
5. Step 5: Solve for x
   x = 7,762,626,363.27/101,009.04
6. Step 6: Final answer
   x = 76,850.81