Finding the Fourth Proportional to 60,313.19, 90,499.25 and 42,657.30

Step by Step Solution

1. Step 1: Write the proportion equation
   60,313.19 : 90,499.25 = 42,657.30 : x
2. Step 2: Convert to fraction form
   60,313.19/90,499.25 = 42,657.30/x
3. Step 3: Cross multiply
   60,313.19x = 90,499.25 × 42,657.30
4. Step 4: Simplify right side
   60,313.19x = 3,860,453,443.74
5. Step 5: Solve for x
   x = 3,860,453,443.74/60,313.19
6. Step 6: Final answer
   x = 64,006.79