Finding the Fourth Proportional to 49,278,739.60, 73,834,128.60 and 42,056,390.80

Step by Step Solution

1. Step 1: Write the proportion equation
   49,278,739.60 : 73,834,128.60 = 42,056,390.80 : x
2. Step 2: Convert to fraction form
   49,278,739.60/73,834,128.60 = 42,056,390.80/x
3. Step 3: Cross multiply
   49,278,739.60x = 73,834,128.60 × 42,056,390.80
4. Step 4: Simplify right side
   49,278,739.60x = 3,105,196,966,779,056.50
5. Step 5: Solve for x
   x = 3,105,196,966,779,056.50/49,278,739.60
6. Step 6: Final answer
   x = 63,012,913.72