Finding the Fourth Proportional to 139,908.59, 193,068.24 and 76,245.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,908.59 : 193,068.24 = 76,245.02 : x
2. Step 2: Convert to fraction form
   139,908.59/193,068.24 = 76,245.02/x
3. Step 3: Cross multiply
   139,908.59x = 193,068.24 × 76,245.02
4. Step 4: Simplify right side
   139,908.59x = 14,720,491,820.16
5. Step 5: Solve for x
   x = 14,720,491,820.16/139,908.59
6. Step 6: Final answer
   x = 105,215.07