Finding the Fourth Proportional to 139,907.09, 193,066.17 and 76,243.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,907.09 : 193,066.17 = 76,243.52 : x
2. Step 2: Convert to fraction form
   139,907.09/193,066.17 = 76,243.52/x
3. Step 3: Cross multiply
   139,907.09x = 193,066.17 × 76,243.52
4. Step 4: Simplify right side
   139,907.09x = 14,720,044,393.72
5. Step 5: Solve for x
   x = 14,720,044,393.72/139,907.09
6. Step 6: Final answer
   x = 105,213.00