Finding the Fourth Proportional to 42,148,943.42, 63,232,439.82 and 12,607,454.01

Step by Step Solution

1. Step 1: Write the proportion equation
   42,148,943.42 : 63,232,439.82 = 12,607,454.01 : x
2. Step 2: Convert to fraction form
   42,148,943.42/63,232,439.82 = 12,607,454.01/x
3. Step 3: Cross multiply
   42,148,943.42x = 63,232,439.82 × 12,607,454.01
4. Step 4: Simplify right side
   42,148,943.42x = 797,200,076,907,705.38
5. Step 5: Solve for x
   x = 797,200,076,907,705.38/42,148,943.42
6. Step 6: Final answer
   x = 18,913,880.45