Finding the Fourth Proportional to 139,803.18, 192,930.59 and 76,140.93

Step by Step Solution

1. Step 1: Write the proportion equation
   139,803.18 : 192,930.59 = 76,140.93 : x
2. Step 2: Convert to fraction form
   139,803.18/192,930.59 = 76,140.93/x
3. Step 3: Cross multiply
   139,803.18x = 192,930.59 × 76,140.93
4. Step 4: Simplify right side
   139,803.18x = 14,689,914,167.34
5. Step 5: Solve for x
   x = 14,689,914,167.34/139,803.18
6. Step 6: Final answer
   x = 105,075.68