Finding the Fourth Proportional to 236,820,978.18, 355,255,828.56 and 89,392,719.69

Step by Step Solution

1. Step 1: Write the proportion equation
   236,820,978.18 : 355,255,828.56 = 89,392,719.69 : x
2. Step 2: Convert to fraction form
   236,820,978.18/355,255,828.56 = 89,392,719.69/x
3. Step 3: Cross multiply
   236,820,978.18x = 355,255,828.56 × 89,392,719.69
4. Step 4: Simplify right side
   236,820,978.18x = 31,757,284,700,702,776
5. Step 5: Solve for x
   x = 31,757,284,700,702,776/236,820,978.18
6. Step 6: Final answer
   x = 134,098,275.18