Finding the Fourth Proportional to 99,696.45, 137,556.50 and 58,861.53

Step by Step Solution

1. Step 1: Write the proportion equation
   99,696.45 : 137,556.50 = 58,861.53 : x
2. Step 2: Convert to fraction form
   99,696.45/137,556.50 = 58,861.53/x
3. Step 3: Cross multiply
   99,696.45x = 137,556.50 × 58,861.53
4. Step 4: Simplify right side
   99,696.45x = 8,096,786,344.31
5. Step 5: Solve for x
   x = 8,096,786,344.31/99,696.45
6. Step 6: Final answer
   x = 81,214.39