Finding the Fourth Proportional to 139,848.15, 192,992.54 and 76,185.93

Step by Step Solution

1. Step 1: Write the proportion equation
   139,848.15 : 192,992.54 = 76,185.93 : x
2. Step 2: Convert to fraction form
   139,848.15/192,992.54 = 76,185.93/x
3. Step 3: Cross multiply
   139,848.15x = 192,992.54 × 76,185.93
4. Step 4: Simplify right side
   139,848.15x = 14,703,316,142.96
5. Step 5: Solve for x
   x = 14,703,316,142.96/139,848.15
6. Step 6: Final answer
   x = 105,137.72