Finding the Fourth Proportional to 139,876.31, 193,029.33 and 76,214.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,876.31 : 193,029.33 = 76,214.10 : x
2. Step 2: Convert to fraction form
   139,876.31/193,029.33 = 76,214.10/x
3. Step 3: Cross multiply
   139,876.31x = 193,029.33 × 76,214.10
4. Step 4: Simplify right side
   139,876.31x = 14,711,556,659.55
5. Step 5: Solve for x
   x = 14,711,556,659.55/139,876.31
6. Step 6: Final answer
   x = 105,175.47