Finding the Fourth Proportional to 89,190, 123,101.40 and 53,388

Step by Step Solution

1. Step 1: Write the proportion equation
   89,190 : 123,101.40 = 53,388 : x
2. Step 2: Convert to fraction form
   89,190/123,101.40 = 53,388/x
3. Step 3: Cross multiply
   89,190x = 123,101.40 × 53,388
4. Step 4: Simplify right side
   89,190x = 6,572,137,543.20
5. Step 5: Solve for x
   x = 6,572,137,543.20/89,190
6. Step 6: Final answer
   x = 73,686.93