Finding the Fourth Proportional to 64,018.04, 88,279.35 and 42,500.21

Step by Step Solution

1. Step 1: Write the proportion equation
   64,018.04 : 88,279.35 = 42,500.21 : x
2. Step 2: Convert to fraction form
   64,018.04/88,279.35 = 42,500.21/x
3. Step 3: Cross multiply
   64,018.04x = 88,279.35 × 42,500.21
4. Step 4: Simplify right side
   64,018.04x = 3,751,890,913.66
5. Step 5: Solve for x
   x = 3,751,890,913.66/64,018.04
6. Step 6: Final answer
   x = 58,606.78