Finding the Fourth Proportional to 112,889.31, 155,789.01 and 61,906.68

Step by Step Solution

1. Step 1: Write the proportion equation
   112,889.31 : 155,789.01 = 61,906.68 : x
2. Step 2: Convert to fraction form
   112,889.31/155,789.01 = 61,906.68/x
3. Step 3: Cross multiply
   112,889.31x = 155,789.01 × 61,906.68
4. Step 4: Simplify right side
   112,889.31x = 9,644,380,389.59
5. Step 5: Solve for x
   x = 9,644,380,389.59/112,889.31
6. Step 6: Final answer
   x = 85,432.18