Finding the Fourth Proportional to 139,720.72, 192,814.62 and 76,059.00

Step by Step Solution

1. Step 1: Write the proportion equation
   139,720.72 : 192,814.62 = 76,059.00 : x
2. Step 2: Convert to fraction form
   139,720.72/192,814.62 = 76,059.00/x
3. Step 3: Cross multiply
   139,720.72x = 192,814.62 × 76,059.00
4. Step 4: Simplify right side
   139,720.72x = 14,665,285,838.21
5. Step 5: Solve for x
   x = 14,665,285,838.21/139,720.72
6. Step 6: Final answer
   x = 104,961.42