Finding the Fourth Proportional to 139,970.06, 209,767.17 and 76,695.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,970.06 : 209,767.17 = 76,695.02 : x
2. Step 2: Convert to fraction form
   139,970.06/209,767.17 = 76,695.02/x
3. Step 3: Cross multiply
   139,970.06x = 209,767.17 × 76,695.02
4. Step 4: Simplify right side
   139,970.06x = 16,088,097,298.49
5. Step 5: Solve for x
   x = 16,088,097,298.49/139,970.06
6. Step 6: Final answer
   x = 114,939.56