Finding the Fourth Proportional to 139,038.83, 191,884.34 and 78,616.27

Step by Step Solution

1. Step 1: Write the proportion equation
   139,038.83 : 191,884.34 = 78,616.27 : x
2. Step 2: Convert to fraction form
   139,038.83/191,884.34 = 78,616.27/x
3. Step 3: Cross multiply
   139,038.83x = 191,884.34 × 78,616.27
4. Step 4: Simplify right side
   139,038.83x = 15,085,231,518.61
5. Step 5: Solve for x
   x = 15,085,231,518.61/139,038.83
6. Step 6: Final answer
   x = 108,496.54