Finding the Fourth Proportional to 118,656.90, 163,746.59 and 64,941.89

Step by Step Solution

1. Step 1: Write the proportion equation
   118,656.90 : 163,746.59 = 64,941.89 : x
2. Step 2: Convert to fraction form
   118,656.90/163,746.59 = 64,941.89/x
3. Step 3: Cross multiply
   118,656.90x = 163,746.59 × 64,941.89
4. Step 4: Simplify right side
   118,656.90x = 10,634,011,892.21
5. Step 5: Solve for x
   x = 10,634,011,892.21/118,656.90
6. Step 6: Final answer
   x = 89,619.84