Finding the Fourth Proportional to 105,457,721.89, 158,128,916.65 and 83,737,624.43

Step by Step Solution

1. Step 1: Write the proportion equation
   105,457,721.89 : 158,128,916.65 = 83,737,624.43 : x
2. Step 2: Convert to fraction form
   105,457,721.89/158,128,916.65 = 83,737,624.43/x
3. Step 3: Cross multiply
   105,457,721.89x = 158,128,916.65 × 83,737,624.43
4. Step 4: Simplify right side
   105,457,721.89x = 13,241,339,833,252,584
5. Step 5: Solve for x
   x = 13,241,339,833,252,584/105,457,721.89
6. Step 6: Final answer
   x = 125,560,647.39