Finding the Fourth Proportional to 57,521.00, 79,373.32 and 42,421.79

Step by Step Solution

1. Step 1: Write the proportion equation
   57,521.00 : 79,373.32 = 42,421.79 : x
2. Step 2: Convert to fraction form
   57,521.00/79,373.32 = 42,421.79/x
3. Step 3: Cross multiply
   57,521.00x = 79,373.32 × 42,421.79
4. Step 4: Simplify right side
   57,521.00x = 3,367,158,405.02
5. Step 5: Solve for x
   x = 3,367,158,405.02/57,521.00
6. Step 6: Final answer
   x = 58,537.90