Finding the Fourth Proportional to 127,156,255.52, 190,456,298.34 and 90,155,990.12

Step by Step Solution

1. Step 1: Write the proportion equation
   127,156,255.52 : 190,456,298.34 = 90,155,990.12 : x
2. Step 2: Convert to fraction form
   127,156,255.52/190,456,298.34 = 90,155,990.12/x
3. Step 3: Cross multiply
   127,156,255.52x = 190,456,298.34 × 90,155,990.12
4. Step 4: Simplify right side
   127,156,255.52x = 17,170,776,151,432,814
5. Step 5: Solve for x
   x = 17,170,776,151,432,814/127,156,255.52
6. Step 6: Final answer
   x = 135,036,818.14