Finding the Fourth Proportional to 139,926.51, 193,100.78 and 76,264.23

Step by Step Solution

1. Step 1: Write the proportion equation
   139,926.51 : 193,100.78 = 76,264.23 : x
2. Step 2: Convert to fraction form
   139,926.51/193,100.78 = 76,264.23/x
3. Step 3: Cross multiply
   139,926.51x = 193,100.78 × 76,264.23
4. Step 4: Simplify right side
   139,926.51x = 14,726,681,917.78
5. Step 5: Solve for x
   x = 14,726,681,917.78/139,926.51
6. Step 6: Final answer
   x = 105,245.83