Finding the Fourth Proportional to 81,878,143,246.56, 112,984,824,989.52 and 47,117,089,746.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,878,143,246.56 : 112,984,824,989.52 = 47,117,089,746.72 : x
2. Step 2: Convert to fraction form
   81,878,143,246.56/112,984,824,989.52 = 47,117,089,746.72/x
3. Step 3: Cross multiply
   81,878,143,246.56x = 112,984,824,989.52 × 47,117,089,746.72
4. Step 4: Simplify right side
   81,878,143,246.56x = 5,323,516,139,048,667,185,152
5. Step 5: Solve for x
   x = 5,323,516,139,048,667,185,152/81,878,143,246.56
6. Step 6: Final answer
   x = 65,017,548,370.85