Finding the Fourth Proportional to 139,840.58, 209,791.25 and 51,093.95

Step by Step Solution

1. Step 1: Write the proportion equation
   139,840.58 : 209,791.25 = 51,093.95 : x
2. Step 2: Convert to fraction form
   139,840.58/209,791.25 = 51,093.95/x
3. Step 3: Cross multiply
   139,840.58x = 209,791.25 × 51,093.95
4. Step 4: Simplify right side
   139,840.58x = 10,719,062,333.51
5. Step 5: Solve for x
   x = 10,719,062,333.51/139,840.58
6. Step 6: Final answer
   x = 76,652.02