Finding the Fourth Proportional to 111,921,558.53, 154,452,363.45 and 64,906,507.29

Step by Step Solution

1. Step 1: Write the proportion equation
   111,921,558.53 : 154,452,363.45 = 64,906,507.29 : x
2. Step 2: Convert to fraction form
   111,921,558.53/154,452,363.45 = 64,906,507.29/x
3. Step 3: Cross multiply
   111,921,558.53x = 154,452,363.45 × 64,906,507.29
4. Step 4: Simplify right side
   111,921,558.53x = 10,024,963,454,225,154
5. Step 5: Solve for x
   x = 10,024,963,454,225,154/111,921,558.53
6. Step 6: Final answer
   x = 89,571,335.37