Finding the Fourth Proportional to 105,174,606.55, 158,479,804 and 86,425,368.07

Step by Step Solution

1. Step 1: Write the proportion equation
   105,174,606.55 : 158,479,804 = 86,425,368.07 : x
2. Step 2: Convert to fraction form
   105,174,606.55/158,479,804 = 86,425,368.07/x
3. Step 3: Cross multiply
   105,174,606.55x = 158,479,804 × 86,425,368.07
4. Step 4: Simplify right side
   105,174,606.55x = 13,696,675,392,361,458
5. Step 5: Solve for x
   x = 13,696,675,392,361,458/105,174,606.55
6. Step 6: Final answer
   x = 130,227,968.91