Finding the Fourth Proportional to 30,716,128.72, 42,388,005.62 and 16,777,492.68

Step by Step Solution

1. Step 1: Write the proportion equation
   30,716,128.72 : 42,388,005.62 = 16,777,492.68 : x
2. Step 2: Convert to fraction form
   30,716,128.72/42,388,005.62 = 16,777,492.68/x
3. Step 3: Cross multiply
   30,716,128.72x = 42,388,005.62 × 16,777,492.68
4. Step 4: Simplify right side
   30,716,128.72x = 711,164,454,009,348.75
5. Step 5: Solve for x
   x = 711,164,454,009,348.75/30,716,128.72
6. Step 6: Final answer
   x = 23,152,802.25