Finding the Fourth Proportional to 105,174,607.56, 158,479,805.51 and 86,425,369.08

Step by Step Solution

1. Step 1: Write the proportion equation
   105,174,607.56 : 158,479,805.51 = 86,425,369.08 : x
2. Step 2: Convert to fraction form
   105,174,607.56/158,479,805.51 = 86,425,369.08/x
3. Step 3: Cross multiply
   105,174,607.56x = 158,479,805.51 × 86,425,369.08
4. Step 4: Simplify right side
   105,174,607.56x = 13,696,675,682,928,366
5. Step 5: Solve for x
   x = 13,696,675,682,928,366/105,174,607.56
6. Step 6: Final answer
   x = 130,227,970.43