Finding the Fourth Proportional to 139,784.72, 209,767.80 and 60,949.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,784.72 : 209,767.80 = 60,949.04 : x
2. Step 2: Convert to fraction form
   139,784.72/209,767.80 = 60,949.04/x
3. Step 3: Cross multiply
   139,784.72x = 209,767.80 × 60,949.04
4. Step 4: Simplify right side
   139,784.72x = 12,785,146,032.91
5. Step 5: Solve for x
   x = 12,785,146,032.91/139,784.72
6. Step 6: Final answer
   x = 91,463.12