Finding the Fourth Proportional to 64,801.44, 89,442.69 and 42,196.86

Step by Step Solution

1. Step 1: Write the proportion equation
   64,801.44 : 89,442.69 = 42,196.86 : x
2. Step 2: Convert to fraction form
   64,801.44/89,442.69 = 42,196.86/x
3. Step 3: Cross multiply
   64,801.44x = 89,442.69 × 42,196.86
4. Step 4: Simplify right side
   64,801.44x = 3,774,200,667.95
5. Step 5: Solve for x
   x = 3,774,200,667.95/64,801.44
6. Step 6: Final answer
   x = 58,242.54