Finding the Fourth Proportional to 42,460.83, 63,690.57 and 10,870.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,460.83 : 63,690.57 = 10,870.63 : x
2. Step 2: Convert to fraction form
   42,460.83/63,690.57 = 10,870.63/x
3. Step 3: Cross multiply
   42,460.83x = 63,690.57 × 10,870.63
4. Step 4: Simplify right side
   42,460.83x = 692,356,620.96
5. Step 5: Solve for x
   x = 692,356,620.96/42,460.83
6. Step 6: Final answer
   x = 16,305.77