Finding the Fourth Proportional to 139,801.61, 192,931.05 and 79,370.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,801.61 : 192,931.05 = 79,370.24 : x
2. Step 2: Convert to fraction form
   139,801.61/192,931.05 = 79,370.24/x
3. Step 3: Cross multiply
   139,801.61x = 192,931.05 × 79,370.24
4. Step 4: Simplify right side
   139,801.61x = 15,312,983,345.10
5. Step 5: Solve for x
   x = 15,312,983,345.10/139,801.61
6. Step 6: Final answer
   x = 109,533.67