Finding the Fourth Proportional to 42,460.34, 63,689.82 and 10,870.13

Step by Step Solution

1. Step 1: Write the proportion equation
   42,460.34 : 63,689.82 = 10,870.13 : x
2. Step 2: Convert to fraction form
   42,460.34/63,689.82 = 10,870.13/x
3. Step 3: Cross multiply
   42,460.34x = 63,689.82 × 10,870.13
4. Step 4: Simplify right side
   42,460.34x = 692,316,304.63
5. Step 5: Solve for x
   x = 692,316,304.63/42,460.34
6. Step 6: Final answer
   x = 16,305.01