Finding the Fourth Proportional to 139,810.82, 192,938.90 and 76,148.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,810.82 : 192,938.90 = 76,148.62 : x
2. Step 2: Convert to fraction form
   139,810.82/192,938.90 = 76,148.62/x
3. Step 3: Cross multiply
   139,810.82x = 192,938.90 × 76,148.62
4. Step 4: Simplify right side
   139,810.82x = 14,692,030,979.32
5. Step 5: Solve for x
   x = 14,692,030,979.32/139,810.82
6. Step 6: Final answer
   x = 105,085.08