Finding the Fourth Proportional to 139,320,547.88, 192,104,397.55 and 89,018,309.60

Step by Step Solution

1. Step 1: Write the proportion equation
   139,320,547.88 : 192,104,397.55 = 89,018,309.60 : x
2. Step 2: Convert to fraction form
   139,320,547.88/192,104,397.55 = 89,018,309.60/x
3. Step 3: Cross multiply
   139,320,547.88x = 192,104,397.55 × 89,018,309.60
4. Step 4: Simplify right side
   139,320,547.88x = 17,100,808,736,725,376
5. Step 5: Solve for x
   x = 17,100,808,736,725,376/139,320,547.88
6. Step 6: Final answer
   x = 122,744,340.28