Finding the Fourth Proportional to 139,899.39, 193,061.18 and 76,237.19

Step by Step Solution

1. Step 1: Write the proportion equation
   139,899.39 : 193,061.18 = 76,237.19 : x
2. Step 2: Convert to fraction form
   139,899.39/193,061.18 = 76,237.19/x
3. Step 3: Cross multiply
   139,899.39x = 193,061.18 × 76,237.19
4. Step 4: Simplify right side
   139,899.39x = 14,718,441,861.28
5. Step 5: Solve for x
   x = 14,718,441,861.28/139,899.39
6. Step 6: Final answer
   x = 105,207.33