Finding the Fourth Proportional to 139,981.29, 193,176.27 and 76,320.15

Step by Step Solution

1. Step 1: Write the proportion equation
   139,981.29 : 193,176.27 = 76,320.15 : x
2. Step 2: Convert to fraction form
   139,981.29/193,176.27 = 76,320.15/x
3. Step 3: Cross multiply
   139,981.29x = 193,176.27 × 76,320.15
4. Step 4: Simplify right side
   139,981.29x = 14,743,241,902.84
5. Step 5: Solve for x
   x = 14,743,241,902.84/139,981.29
6. Step 6: Final answer
   x = 105,322.95