Finding the Fourth Proportional to 105,174,615.56, 158,479,817.59 and 86,425,377.08

Step by Step Solution

1. Step 1: Write the proportion equation
   105,174,615.56 : 158,479,817.59 = 86,425,377.08 : x
2. Step 2: Convert to fraction form
   105,174,615.56/158,479,817.59 = 86,425,377.08/x
3. Step 3: Cross multiply
   105,174,615.56x = 158,479,817.59 × 86,425,377.08
4. Step 4: Simplify right side
   105,174,615.56x = 13,696,677,994,785,366
5. Step 5: Solve for x
   x = 13,696,677,994,785,366/105,174,615.56
6. Step 6: Final answer
   x = 130,227,982.50