Finding the Fourth Proportional to 139,413, 209,001.93 and 60,467.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,413 : 209,001.93 = 60,467.76 : x
2. Step 2: Convert to fraction form
   139,413/209,001.93 = 60,467.76/x
3. Step 3: Cross multiply
   139,413x = 209,001.93 × 60,467.76
4. Step 4: Simplify right side
   139,413x = 12,637,878,542.78
5. Step 5: Solve for x
   x = 12,637,878,542.78/139,413
6. Step 6: Final answer
   x = 90,650.65