Finding the Fourth Proportional to 28,077,974.61, 42,089,061.21 and 19,540,374.93

Step by Step Solution

1. Step 1: Write the proportion equation
   28,077,974.61 : 42,089,061.21 = 19,540,374.93 : x
2. Step 2: Convert to fraction form
   28,077,974.61/42,089,061.21 = 19,540,374.93/x
3. Step 3: Cross multiply
   28,077,974.61x = 42,089,061.21 × 19,540,374.93
4. Step 4: Simplify right side
   28,077,974.61x = 822,436,036,495,119.50
5. Step 5: Solve for x
   x = 822,436,036,495,119.50/28,077,974.61
6. Step 6: Final answer
   x = 29,291,145.39