Finding the Fourth Proportional to 42,051.88, 63,071.72 and 13,585.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,051.88 : 63,071.72 = 13,585.04 : x
2. Step 2: Convert to fraction form
   42,051.88/63,071.72 = 13,585.04/x
3. Step 3: Cross multiply
   42,051.88x = 63,071.72 × 13,585.04
4. Step 4: Simplify right side
   42,051.88x = 856,831,839.07
5. Step 5: Solve for x
   x = 856,831,839.07/42,051.88
6. Step 6: Final answer
   x = 20,375.59