Finding the Fourth Proportional to 101,216,891.69, 139,679,500.57 and 56,562,864.10

Step by Step Solution

1. Step 1: Write the proportion equation
   101,216,891.69 : 139,679,500.57 = 56,562,864.10 : x
2. Step 2: Convert to fraction form
   101,216,891.69/139,679,500.57 = 56,562,864.10/x
3. Step 3: Cross multiply
   101,216,891.69x = 139,679,500.57 × 56,562,864.10
4. Step 4: Simplify right side
   101,216,891.69x = 7,900,672,607,806,176
5. Step 5: Solve for x
   x = 7,900,672,607,806,176/101,216,891.69
6. Step 6: Final answer
   x = 78,056,858.65