Finding the Fourth Proportional to 100,838.81, 139,152.27 and 55,507.94

Step by Step Solution

1. Step 1: Write the proportion equation
   100,838.81 : 139,152.27 = 55,507.94 : x
2. Step 2: Convert to fraction form
   100,838.81/139,152.27 = 55,507.94/x
3. Step 3: Cross multiply
   100,838.81x = 139,152.27 × 55,507.94
4. Step 4: Simplify right side
   100,838.81x = 7,724,055,854.02
5. Step 5: Solve for x
   x = 7,724,055,854.02/100,838.81
6. Step 6: Final answer
   x = 76,598.05