Finding the Fourth Proportional to 91,585.47, 137,141.61 and 63,210

Step by Step Solution

1. Step 1: Write the proportion equation
   91,585.47 : 137,141.61 = 63,210 : x
2. Step 2: Convert to fraction form
   91,585.47/137,141.61 = 63,210/x
3. Step 3: Cross multiply
   91,585.47x = 137,141.61 × 63,210
4. Step 4: Simplify right side
   91,585.47x = 8,668,721,168.10
5. Step 5: Solve for x
   x = 8,668,721,168.10/91,585.47
6. Step 6: Final answer
   x = 94,651.71