Finding the Fourth Proportional to 119,061.48, 164,312.24 and 78,705.28

Step by Step Solution

1. Step 1: Write the proportion equation
   119,061.48 : 164,312.24 = 78,705.28 : x
2. Step 2: Convert to fraction form
   119,061.48/164,312.24 = 78,705.28/x
3. Step 3: Cross multiply
   119,061.48x = 164,312.24 × 78,705.28
4. Step 4: Simplify right side
   119,061.48x = 12,932,240,856.63
5. Step 5: Solve for x
   x = 12,932,240,856.63/119,061.48
6. Step 6: Final answer
   x = 108,618.18