Finding the Fourth Proportional to 57,388.32, 79,174.32 and 42,316.98

Step by Step Solution

1. Step 1: Write the proportion equation
   57,388.32 : 79,174.32 = 42,316.98 : x
2. Step 2: Convert to fraction form
   57,388.32/79,174.32 = 42,316.98/x
3. Step 3: Cross multiply
   57,388.32x = 79,174.32 × 42,316.98
4. Step 4: Simplify right side
   57,388.32x = 3,350,418,115.95
5. Step 5: Solve for x
   x = 3,350,418,115.95/57,388.32
6. Step 6: Final answer
   x = 58,381.53