Finding the Fourth Proportional to 139,877.45, 193,030.91 and 76,215.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,877.45 : 193,030.91 = 76,215.25 : x
2. Step 2: Convert to fraction form
   139,877.45/193,030.91 = 76,215.25/x
3. Step 3: Cross multiply
   139,877.45x = 193,030.91 × 76,215.25
4. Step 4: Simplify right side
   139,877.45x = 14,711,898,098.22
5. Step 5: Solve for x
   x = 14,711,898,098.22/139,877.45
6. Step 6: Final answer
   x = 105,177.05