Finding the Fourth Proportional to 39,989,562, 55,185,624.72 and 21,654,862.08

Step by Step Solution

1. Step 1: Write the proportion equation
   39,989,562 : 55,185,624.72 = 21,654,862.08 : x
2. Step 2: Convert to fraction form
   39,989,562/55,185,624.72 = 21,654,862.08/x
3. Step 3: Cross multiply
   39,989,562x = 55,185,624.72 × 21,654,862.08
4. Step 4: Simplify right side
   39,989,562x = 1,195,037,092,110,238.50
5. Step 5: Solve for x
   x = 1,195,037,092,110,238.50/39,989,562
6. Step 6: Final answer
   x = 29,883,725.46