Finding the Fourth Proportional to 85,428.06, 117,883.98 and 49,612.20

Step by Step Solution

1. Step 1: Write the proportion equation
   85,428.06 : 117,883.98 = 49,612.20 : x
2. Step 2: Convert to fraction form
   85,428.06/117,883.98 = 49,612.20/x
3. Step 3: Cross multiply
   85,428.06x = 117,883.98 × 49,612.20
4. Step 4: Simplify right side
   85,428.06x = 5,848,483,592.56
5. Step 5: Solve for x
   x = 5,848,483,592.56/85,428.06
6. Step 6: Final answer
   x = 68,460.92