Finding the Fourth Proportional to 139,801.01, 192,927.59 and 76,138.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,801.01 : 192,927.59 = 76,138.76 : x
2. Step 2: Convert to fraction form
   139,801.01/192,927.59 = 76,138.76/x
3. Step 3: Cross multiply
   139,801.01x = 192,927.59 × 76,138.76
4. Step 4: Simplify right side
   139,801.01x = 14,689,267,564.34
5. Step 5: Solve for x
   x = 14,689,267,564.34/139,801.01
6. Step 6: Final answer
   x = 105,072.68