Finding the Fourth Proportional to 139,899.96, 193,061.64 and 76,237.59

Step by Step Solution

1. Step 1: Write the proportion equation
   139,899.96 : 193,061.64 = 76,237.59 : x
2. Step 2: Convert to fraction form
   139,899.96/193,061.64 = 76,237.59/x
3. Step 3: Cross multiply
   139,899.96x = 193,061.64 × 76,237.59
4. Step 4: Simplify right side
   139,899.96x = 14,718,554,155.05
5. Step 5: Solve for x
   x = 14,718,554,155.05/139,899.96
6. Step 6: Final answer
   x = 105,207.71