Finding the Fourth Proportional to 42,346.60, 63,499.32 and 12,758.92

Step by Step Solution

1. Step 1: Write the proportion equation
   42,346.60 : 63,499.32 = 12,758.92 : x
2. Step 2: Convert to fraction form
   42,346.60/63,499.32 = 12,758.92/x
3. Step 3: Cross multiply
   42,346.60x = 63,499.32 × 12,758.92
4. Step 4: Simplify right side
   42,346.60x = 810,182,743.93
5. Step 5: Solve for x
   x = 810,182,743.93/42,346.60
6. Step 6: Final answer
   x = 19,132.18