Finding the Fourth Proportional to 139,465.31, 192,461.16 and 75,803.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,465.31 : 192,461.16 = 75,803.10 : x
2. Step 2: Convert to fraction form
   139,465.31/192,461.16 = 75,803.10/x
3. Step 3: Cross multiply
   139,465.31x = 192,461.16 × 75,803.10
4. Step 4: Simplify right side
   139,465.31x = 14,589,152,557.60
5. Step 5: Solve for x
   x = 14,589,152,557.60/139,465.31
6. Step 6: Final answer
   x = 104,607.76