Finding the Fourth Proportional to 139,892.83, 193,051.96 and 76,230.61

Step by Step Solution

1. Step 1: Write the proportion equation
   139,892.83 : 193,051.96 = 76,230.61 : x
2. Step 2: Convert to fraction form
   139,892.83/193,051.96 = 76,230.61/x
3. Step 3: Cross multiply
   139,892.83x = 193,051.96 × 76,230.61
4. Step 4: Simplify right side
   139,892.83x = 14,716,467,999.29
5. Step 5: Solve for x
   x = 14,716,467,999.29/139,892.83
6. Step 6: Final answer
   x = 105,198.16