Finding the Fourth Proportional to 112,172,567.76, 154,823,971.50 and 65,777,768.46

Step by Step Solution

1. Step 1: Write the proportion equation
   112,172,567.76 : 154,823,971.50 = 65,777,768.46 : x
2. Step 2: Convert to fraction form
   112,172,567.76/154,823,971.50 = 65,777,768.46/x
3. Step 3: Cross multiply
   112,172,567.76x = 154,823,971.50 × 65,777,768.46
4. Step 4: Simplify right side
   112,172,567.76x = 10,183,975,349,384,640
5. Step 5: Solve for x
   x = 10,183,975,349,384,640/112,172,567.76
6. Step 6: Final answer
   x = 90,788,465.96