Finding the Fourth Proportional to 139,907.59, 193,066.86 and 76,244.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,907.59 : 193,066.86 = 76,244.02 : x
2. Step 2: Convert to fraction form
   139,907.59/193,066.86 = 76,244.02/x
3. Step 3: Cross multiply
   139,907.59x = 193,066.86 × 76,244.02
4. Step 4: Simplify right side
   139,907.59x = 14,720,193,535.18
5. Step 5: Solve for x
   x = 14,720,193,535.18/139,907.59
6. Step 6: Final answer
   x = 105,213.69