Finding the Fourth Proportional to 139,499.13, 209,275.64 and 59,535.93

Step by Step Solution

1. Step 1: Write the proportion equation
   139,499.13 : 209,275.64 = 59,535.93 : x
2. Step 2: Convert to fraction form
   139,499.13/209,275.64 = 59,535.93/x
3. Step 3: Cross multiply
   139,499.13x = 209,275.64 × 59,535.93
4. Step 4: Simplify right side
   139,499.13x = 12,459,419,556.07
5. Step 5: Solve for x
   x = 12,459,419,556.07/139,499.13
6. Step 6: Final answer
   x = 89,315.39