Finding the Fourth Proportional to 42,155,011.10, 58,156,101.36 and 28,220,854.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,155,011.10 : 58,156,101.36 = 28,220,854.88 : x
2. Step 2: Convert to fraction form
   42,155,011.10/58,156,101.36 = 28,220,854.88/x
3. Step 3: Cross multiply
   42,155,011.10x = 58,156,101.36 × 28,220,854.88
4. Step 4: Simplify right side
   42,155,011.10x = 1,641,214,897,012,521
5. Step 5: Solve for x
   x = 1,641,214,897,012,521/42,155,011.10
6. Step 6: Final answer
   x = 38,932,854.10