Finding the Fourth Proportional to 101,280,049.77, 139,767,139.71 and 54,870,303.75

Step by Step Solution

1. Step 1: Write the proportion equation
   101,280,049.77 : 139,767,139.71 = 54,870,303.75 : x
2. Step 2: Convert to fraction form
   101,280,049.77/139,767,139.71 = 54,870,303.75/x
3. Step 3: Cross multiply
   101,280,049.77x = 139,767,139.71 × 54,870,303.75
4. Step 4: Simplify right side
   101,280,049.77x = 7,669,065,410,156,387
5. Step 5: Solve for x
   x = 7,669,065,410,156,387/101,280,049.77
6. Step 6: Final answer
   x = 75,721,382.72