Finding the Fourth Proportional to 99,581.60, 137,429.41 and 60,836.01

Step by Step Solution

1. Step 1: Write the proportion equation
   99,581.60 : 137,429.41 = 60,836.01 : x
2. Step 2: Convert to fraction form
   99,581.60/137,429.41 = 60,836.01/x
3. Step 3: Cross multiply
   99,581.60x = 137,429.41 × 60,836.01
4. Step 4: Simplify right side
   99,581.60x = 8,360,657,180.71
5. Step 5: Solve for x
   x = 8,360,657,180.71/99,581.60
6. Step 6: Final answer
   x = 83,957.85