Finding the Fourth Proportional to 151,388,406.81, 208,915,969.10 and 81,773,788.41

Step by Step Solution

1. Step 1: Write the proportion equation
   151,388,406.81 : 208,915,969.10 = 81,773,788.41 : x
2. Step 2: Convert to fraction form
   151,388,406.81/208,915,969.10 = 81,773,788.41/x
3. Step 3: Cross multiply
   151,388,406.81x = 208,915,969.10 × 81,773,788.41
4. Step 4: Simplify right side
   151,388,406.81x = 17,083,850,252,244,628
5. Step 5: Solve for x
   x = 17,083,850,252,244,628/151,388,406.81
6. Step 6: Final answer
   x = 112,847,810.56