Finding the Fourth Proportional to 139,802.23, 192,925.42 and 79,374.61

Step by Step Solution

1. Step 1: Write the proportion equation
   139,802.23 : 192,925.42 = 79,374.61 : x
2. Step 2: Convert to fraction form
   139,802.23/192,925.42 = 79,374.61/x
3. Step 3: Cross multiply
   139,802.23x = 192,925.42 × 79,374.61
4. Step 4: Simplify right side
   139,802.23x = 15,313,379,971.59
5. Step 5: Solve for x
   x = 15,313,379,971.59/139,802.23
6. Step 6: Final answer
   x = 109,536.02