Finding the Fourth Proportional to 28,077,971.96, 42,089,057.27 and 19,540,372.31

Step by Step Solution

1. Step 1: Write the proportion equation
   28,077,971.96 : 42,089,057.27 = 19,540,372.31 : x
2. Step 2: Convert to fraction form
   28,077,971.96/42,089,057.27 = 19,540,372.31/x
3. Step 3: Cross multiply
   28,077,971.96x = 42,089,057.27 × 19,540,372.31
4. Step 4: Simplify right side
   28,077,971.96x = 822,435,849,071,117.88
5. Step 5: Solve for x
   x = 822,435,849,071,117.88/28,077,971.96
6. Step 6: Final answer
   x = 29,291,141.48