Finding the Fourth Proportional to 139,415,560.72, 209,078,973.60 and 46,025,143.48

Step by Step Solution

1. Step 1: Write the proportion equation
   139,415,560.72 : 209,078,973.60 = 46,025,143.48 : x
2. Step 2: Convert to fraction form
   139,415,560.72/209,078,973.60 = 46,025,143.48/x
3. Step 3: Cross multiply
   139,415,560.72x = 209,078,973.60 × 46,025,143.48
4. Step 4: Simplify right side
   139,415,560.72x = 9,622,889,758,591,132
5. Step 5: Solve for x
   x = 9,622,889,758,591,132/139,415,560.72
6. Step 6: Final answer
   x = 69,023,068.22