Finding the Fourth Proportional to 89,340.34, 123,347.37 and 55,385.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,340.34 : 123,347.37 = 55,385.12 : x
2. Step 2: Convert to fraction form
   89,340.34/123,347.37 = 55,385.12/x
3. Step 3: Cross multiply
   89,340.34x = 123,347.37 × 55,385.12
4. Step 4: Simplify right side
   89,340.34x = 6,831,607,995.47
5. Step 5: Solve for x
   x = 6,831,607,995.47/89,340.34
6. Step 6: Final answer
   x = 76,467.23