Finding the Fourth Proportional to 139,910.08, 193,076.17 and 76,247.86

Step by Step Solution

1. Step 1: Write the proportion equation
   139,910.08 : 193,076.17 = 76,247.86 : x
2. Step 2: Convert to fraction form
   139,910.08/193,076.17 = 76,247.86/x
3. Step 3: Cross multiply
   139,910.08x = 193,076.17 × 76,247.86
4. Step 4: Simplify right side
   139,910.08x = 14,721,644,779.50
5. Step 5: Solve for x
   x = 14,721,644,779.50/139,910.08
6. Step 6: Final answer
   x = 105,222.19