Finding the Fourth Proportional to 89,427,118.68, 134,140,510.49 and 28,020,978.27

Step by Step Solution

1. Step 1: Write the proportion equation
   89,427,118.68 : 134,140,510.49 = 28,020,978.27 : x
2. Step 2: Convert to fraction form
   89,427,118.68/134,140,510.49 = 28,020,978.27/x
3. Step 3: Cross multiply
   89,427,118.68x = 134,140,510.49 × 28,020,978.27
4. Step 4: Simplify right side
   89,427,118.68x = 3,758,748,329,426,892
5. Step 5: Solve for x
   x = 3,758,748,329,426,892/89,427,118.68
6. Step 6: Final answer
   x = 42,031,414.91