Finding the Fourth Proportional to 89,507.61, 134,261.41 and 42,618.33

Step by Step Solution

1. Step 1: Write the proportion equation
   89,507.61 : 134,261.41 = 42,618.33 : x
2. Step 2: Convert to fraction form
   89,507.61/134,261.41 = 42,618.33/x
3. Step 3: Cross multiply
   89,507.61x = 134,261.41 × 42,618.33
4. Step 4: Simplify right side
   89,507.61x = 5,721,997,077.65
5. Step 5: Solve for x
   x = 5,721,997,077.65/89,507.61
6. Step 6: Final answer
   x = 63,927.49