Finding the Fourth Proportional to 139,814.30, 192,943.76 and 76,152.15

Step by Step Solution

1. Step 1: Write the proportion equation
   139,814.30 : 192,943.76 = 76,152.15 : x
2. Step 2: Convert to fraction form
   139,814.30/192,943.76 = 76,152.15/x
3. Step 3: Cross multiply
   139,814.30x = 192,943.76 × 76,152.15
4. Step 4: Simplify right side
   139,814.30x = 14,693,081,772.32
5. Step 5: Solve for x
   x = 14,693,081,772.32/139,814.30
6. Step 6: Final answer
   x = 105,089.98