Finding the Fourth Proportional to 139,417.14, 209,008.17 and 60,471.93

Step by Step Solution

1. Step 1: Write the proportion equation
   139,417.14 : 209,008.17 = 60,471.93 : x
2. Step 2: Convert to fraction form
   139,417.14/209,008.17 = 60,471.93/x
3. Step 3: Cross multiply
   139,417.14x = 209,008.17 × 60,471.93
4. Step 4: Simplify right side
   139,417.14x = 12,639,127,425.67
5. Step 5: Solve for x
   x = 12,639,127,425.67/139,417.14
6. Step 6: Final answer
   x = 90,656.91