Finding the Fourth Proportional to 139,871.75, 193,024.42 and 76,210.61

Step by Step Solution

1. Step 1: Write the proportion equation
   139,871.75 : 193,024.42 = 76,210.61 : x
2. Step 2: Convert to fraction form
   139,871.75/193,024.42 = 76,210.61/x
3. Step 3: Cross multiply
   139,871.75x = 193,024.42 × 76,210.61
4. Step 4: Simplify right side
   139,871.75x = 14,710,507,637.45
5. Step 5: Solve for x
   x = 14,710,507,637.45/139,871.75
6. Step 6: Final answer
   x = 105,171.40