Finding the Fourth Proportional to 139,420.59, 209,118.06 and 45,926.34

Step by Step Solution

1. Step 1: Write the proportion equation
   139,420.59 : 209,118.06 = 45,926.34 : x
2. Step 2: Convert to fraction form
   139,420.59/209,118.06 = 45,926.34/x
3. Step 3: Cross multiply
   139,420.59x = 209,118.06 × 45,926.34
4. Step 4: Simplify right side
   139,420.59x = 9,604,027,123.70
5. Step 5: Solve for x
   x = 9,604,027,123.70/139,420.59
6. Step 6: Final answer
   x = 68,885.29