Finding the Fourth Proportional to 101,280,038.65, 139,767,124.35 and 54,870,292.57

Step by Step Solution

1. Step 1: Write the proportion equation
   101,280,038.65 : 139,767,124.35 = 54,870,292.57 : x
2. Step 2: Convert to fraction form
   101,280,038.65/139,767,124.35 = 54,870,292.57/x
3. Step 3: Cross multiply
   101,280,038.65x = 139,767,124.35 × 54,870,292.57
4. Step 4: Simplify right side
   101,280,038.65x = 7,669,063,004,870,480
5. Step 5: Solve for x
   x = 7,669,063,004,870,480/101,280,038.65
6. Step 6: Final answer
   x = 75,721,367.28