Finding the Fourth Proportional to 28,155,054.27, 42,248,557.56 and 15,201,032.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,155,054.27 : 42,248,557.56 = 15,201,032.25 : x
2. Step 2: Convert to fraction form
   28,155,054.27/42,248,557.56 = 15,201,032.25/x
3. Step 3: Cross multiply
   28,155,054.27x = 42,248,557.56 × 15,201,032.25
4. Step 4: Simplify right side
   28,155,054.27x = 642,221,685,985,541.38
5. Step 5: Solve for x
   x = 642,221,685,985,541.38/28,155,054.27
6. Step 6: Final answer
   x = 22,810,173.97