Finding the Fourth Proportional to 88,722,417.72, 123,063,320.64 and 86,362,819.68

Step by Step Solution

1. Step 1: Write the proportion equation
   88,722,417.72 : 123,063,320.64 = 86,362,819.68 : x
2. Step 2: Convert to fraction form
   88,722,417.72/123,063,320.64 = 86,362,819.68/x
3. Step 3: Cross multiply
   88,722,417.72x = 123,063,320.64 × 86,362,819.68
4. Step 4: Simplify right side
   88,722,417.72x = 10,628,095,369,654,344
5. Step 5: Solve for x
   x = 10,628,095,369,654,344/88,722,417.72
6. Step 6: Final answer
   x = 119,790,416.48