Finding the Fourth Proportional to 157,464,008.10, 236,196,012.15 and 128,766,194.10

Step by Step Solution

1. Step 1: Write the proportion equation
   157,464,008.10 : 236,196,012.15 = 128,766,194.10 : x
2. Step 2: Convert to fraction form
   157,464,008.10/236,196,012.15 = 128,766,194.10/x
3. Step 3: Cross multiply
   157,464,008.10x = 236,196,012.15 × 128,766,194.10
4. Step 4: Simplify right side
   157,464,008.10x = 30,414,061,546,152,856
5. Step 5: Solve for x
   x = 30,414,061,546,152,856/157,464,008.10
6. Step 6: Final answer
   x = 193,149,291.15