Finding the Fourth Proportional to 156,965,401.23, 216,632,880.21 and 90,010,561.29

Step by Step Solution

1. Step 1: Write the proportion equation
   156,965,401.23 : 216,632,880.21 = 90,010,561.29 : x
2. Step 2: Convert to fraction form
   156,965,401.23/216,632,880.21 = 90,010,561.29/x
3. Step 3: Cross multiply
   156,965,401.23x = 216,632,880.21 × 90,010,561.29
4. Step 4: Simplify right side
   156,965,401.23x = 19,499,247,141,571,436
5. Step 5: Solve for x
   x = 19,499,247,141,571,436/156,965,401.23
6. Step 6: Final answer
   x = 124,226,402.69