Finding the Fourth Proportional to 72,462.84, 99,998.72 and 40,631.74

Step by Step Solution

1. Step 1: Write the proportion equation
   72,462.84 : 99,998.72 = 40,631.74 : x
2. Step 2: Convert to fraction form
   72,462.84/99,998.72 = 40,631.74/x
3. Step 3: Cross multiply
   72,462.84x = 99,998.72 × 40,631.74
4. Step 4: Simplify right side
   72,462.84x = 4,063,121,991.37
5. Step 5: Solve for x
   x = 4,063,121,991.37/72,462.84
6. Step 6: Final answer
   x = 56,071.80