Finding the Fourth Proportional to 85,696,870.29, 128,528,567.19 and 27,388,907.55

Step by Step Solution

1. Step 1: Write the proportion equation
   85,696,870.29 : 128,528,567.19 = 27,388,907.55 : x
2. Step 2: Convert to fraction form
   85,696,870.29/128,528,567.19 = 27,388,907.55/x
3. Step 3: Cross multiply
   85,696,870.29x = 128,528,567.19 × 27,388,907.55
4. Step 4: Simplify right side
   85,696,870.29x = 3,520,257,044,300,873.50
5. Step 5: Solve for x
   x = 3,520,257,044,300,873.50/85,696,870.29
6. Step 6: Final answer
   x = 41,078,011.75