Finding the Fourth Proportional to 139,485.33, 192,442.91 and 79,051.23

Step by Step Solution

1. Step 1: Write the proportion equation
   139,485.33 : 192,442.91 = 79,051.23 : x
2. Step 2: Convert to fraction form
   139,485.33/192,442.91 = 79,051.23/x
3. Step 3: Cross multiply
   139,485.33x = 192,442.91 × 79,051.23
4. Step 4: Simplify right side
   139,485.33x = 15,212,848,345.02
5. Step 5: Solve for x
   x = 15,212,848,345.02/139,485.33
6. Step 6: Final answer
   x = 109,064.15