Finding the Fourth Proportional to 99,742.37, 137,662.27 and 59,458.70

Step by Step Solution

1. Step 1: Write the proportion equation
   99,742.37 : 137,662.27 = 59,458.70 : x
2. Step 2: Convert to fraction form
   99,742.37/137,662.27 = 59,458.70/x
3. Step 3: Cross multiply
   99,742.37x = 137,662.27 × 59,458.70
4. Step 4: Simplify right side
   99,742.37x = 8,185,219,808.76
5. Step 5: Solve for x
   x = 8,185,219,808.76/99,742.37
6. Step 6: Final answer
   x = 82,063.62