Finding the Fourth Proportional to 109,861,638.48, 151,734,889 and 72,352,477.12

Step by Step Solution

1. Step 1: Write the proportion equation
   109,861,638.48 : 151,734,889 = 72,352,477.12 : x
2. Step 2: Convert to fraction form
   109,861,638.48/151,734,889 = 72,352,477.12/x
3. Step 3: Cross multiply
   109,861,638.48x = 151,734,889 × 72,352,477.12
4. Step 4: Simplify right side
   109,861,638.48x = 10,978,395,084,678,240
5. Step 5: Solve for x
   x = 10,978,395,084,678,240/109,861,638.48
6. Step 6: Final answer
   x = 99,929,285.93