Finding the Fourth Proportional to 139,962.35, 193,150.84 and 76,300.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,962.35 : 193,150.84 = 76,300.10 : x
2. Step 2: Convert to fraction form
   139,962.35/193,150.84 = 76,300.10/x
3. Step 3: Cross multiply
   139,962.35x = 193,150.84 × 76,300.10
4. Step 4: Simplify right side
   139,962.35x = 14,737,428,407.08
5. Step 5: Solve for x
   x = 14,737,428,407.08/139,962.35
6. Step 6: Final answer
   x = 105,295.66