Finding the Fourth Proportional to 89,481.31, 123,437.52 and 55,478.93

Step by Step Solution

1. Step 1: Write the proportion equation
   89,481.31 : 123,437.52 = 55,478.93 : x
2. Step 2: Convert to fraction form
   89,481.31/123,437.52 = 55,478.93/x
3. Step 3: Cross multiply
   89,481.31x = 123,437.52 × 55,478.93
4. Step 4: Simplify right side
   89,481.31x = 6,848,180,914.27
5. Step 5: Solve for x
   x = 6,848,180,914.27/89,481.31
6. Step 6: Final answer
   x = 76,531.97